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CVE-2025-71327 Critical · 9.1 CWE-306 Jun 25, 2026
Flowise - Authentication Bypass via Unprotected Registration Endpoint
Flowise contains an authentication bypass vulnerability in the unprotected /api/v1/account/register endpoint that allows unauthenticated attackers to create user accounts. Remote attackers can exploit this endpoint to register arbitrary accounts and authenticate to the system, gaining full API access without credentials.
CVE-2026-54040 High · 7.1 CWE-306 Jun 25, 2026
LibreChat: 2FA Backup Code Regeneration Without OTP Verification Allows 2FA Bypass
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the POST /api/auth/2fa/backup/regenerate endpoint regenerates all 2FA backup codes without requiring any TOTP token or existing backup code verification. An attacker with a stolen session token can silently replace a victim's backup codes and use them to bypass 2FA login or disable 2FA entirely. This vulnerability is fixed in 0.8.4-rc1.
CVE-2026-54036 High · 8.1 CWE-306 Jun 25, 2026
LibreChat: 2FA Re-enrollment Allows Full Account 2FA Takeover Without OTP Verification
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the GET /api/auth/2fa/enable endpoint can be called by an authenticated user (or attacker with a stolen session) even when 2FA is already fully enabled on the account. This endpoint overwrites the existing TOTP secret, generates new backup codes, and sets twoFactorEnabled to false — all without requiring any TOTP or backup code verification. An attacker with a valid session token can completely take over a victim's 2FA, locking the legitimate user out of their own two-factor authentication. This vulnerability is fixed in 0.8.4-rc1.
CVE-2026-4522 Medium · 6.7 CWE-306 Jun 25, 2026
Missing authentication for critical function vulnerability in HYPR Passwordless on Windows allows...
Missing authentication for critical function vulnerability in HYPR Passwordless on Windows allows Credentials Interception. This issue affects HYPR Passwordless: before 11.1.1.
CVE-2026-54068 Medium · 5.9 CWE-306 Jun 24, 2026
SiYuan: Unauthenticated SQLite Data Exfiltration via Template Injection in /api/icon/getDynamicIcon
SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, the /api/icon/getDynamicIcon endpoint is explicitly excluded from authentication in SiYuan's kernel router (router.go, "不需要鉴权" -- no auth needed). When called with type=8 and a valid block id parameter, this endpoint invokes RenderDynamicIconContentTemplate, which executes a Go template that includes the querySQL and queryBlocks functions. These functions run arbitrary SELECT statements against the SiYuan SQLite database. An unauthenticated network-adjacent attacker who knows a valid block ID can exfiltrate all user note content, tags, asset references, and block attributes from the database. This vulnerability is fixed in 3.7.0.
CVE-2026-1840 High · 7.5 CWE-306 Jun 24, 2026
Missing authentication for critical function in Hubbell Aclara Metrum Cellular Web Interface
The Aclara Metrum Cellular Web Interface is vulnerable to unauthorized access due to the absence of authentication controls on critical system functions. This weakness exposes essential configuration settings, allowing attackers to alter operational parameters and trigger system restarts without restriction. Such unauthorized changes can disrupt normal functionality and, if performed repeatedly, may lead to a loss of communications to the device.
CVE-2026-49980 Critical · 9.8 CWE-306 Jun 24, 2026
Rclone rcd --rc-serve: missing authentication enables command execution (CVE-2026-49980)
Rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.46.0 until 1.74.3, rclone rcd --rc-serve accepts unauthenticated GET and HEAD requests to paths of the form: /[remote:path]/object. The remote value is parsed from the URL and passed to normal backend initialization. Inline remote configuration can set backend options that execute local commands during initialization. As a result, a single unauthenticated GET or HEAD request can execute a command as the rclone process user. This vulnerability is fixed in 1.74.3.
CVE-2026-13164 High · 8.8 CWE-306 Jun 24, 2026
Unauthenticated self-registration in MailerUp allows access to stored email data
Missing Authentication for Critical Function (CWE-306) in the RegisterView (apps/accounts/views.py), exposed at POST /api/auth/register/, in MailerUp <1.0.1 allows a remote, unauthenticated attacker to self-register a working account on instances where registration is intended to be restricted, because the endpoint applies the AllowAny permission with no email verification, CAPTCHA, or administrator approval. Any account created this way can read all email stored by the instance, resulting in full disclosure of stored messages to an arbitrary unauthenticated attacker
CVE-2026-56270 High · 7.5 Public exploit CWE-306 Jun 24, 2026
Flowise - Unauthenticated OAuth Secrets Disclosure via /api/v1/loginmethod Endpoint
Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentication vulnerability in the /api/v1/loginmethod endpoint that allows unauthenticated users to retrieve an organization's complete SSO configuration, including OAuth client secrets in cleartext, by providing an organizationId parameter. Remote attackers can send a GET request to harvest sensitive API credentials for Google, Microsoft/Azure, GitHub, and Auth0 integrations. This affects FlowiseAI Cloud and self-hosted instances where the endpoint is exposed.
CVE-2026-56262 Medium · 6.5 CWE-306 Jun 24, 2026
Crawl4AI - Unauthenticated Access to Monitor Endpoints via Docker API Server
Crawl4AI before 0.8.7 contains an authentication bypass vulnerability in the monitor router endpoints that allows unauthenticated attackers to access destructive operations. Remote attackers can invoke the /monitor/actions/cleanup endpoint and manipulate monitoring state without authentication, causing service disruption.
CVE-2026-13007 High · 7.5 CWE-306 Jun 23, 2026
Insecure Public Caching on REST API Endpoints in Tenable Identity Exposure
Tenable Identity Exposure contains multiple unauthenticated API endpoints under /w/api/* that expose sensitive application configuration data including cleartext LDAP credentials, SAML configuration, user accounts, and directory settings to unauthenticated remote attackers. Affected responses are served with Cache-Control: public headers and without Vary: Cookie, allowing reverse proxies and CDNs to cache and serve sensitive data to unauthenticated users even after authentication is applied.
CVE-2026-54309 Critical · 10.0 CWE-306 Jun 23, 2026
n8n @n8n/mcp-browser: missing authentication on HTTP MCP endpoint
n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP transport mode, the MCP endpoint accepts session initialization and tool invocation requests without any authentication. Any network-reachable client, or any website visited by the user, can establish an MCP session and invoke browser-control tools. Where the n8n AI Browser Bridge extension is installed and a browser connection is active, an unauthenticated caller can access browser-control capabilities including navigation, JavaScript evaluation, and cookie and storage access against the user's real browser profile. This issue only affects instances where @n8n/mcp-browser is run with the HTTP transport (--transport http). This vulnerability is fixed in 2.25.7 and 2.26.2.
CVE-2026-10711 High · 8.8 CWE-306 Jun 23, 2026
RCE in Akınsoft's CafePlus
Missing authentication for critical function vulnerability in AKIN Software Computer Import Export Industry and Trade Ltd. CafePlus allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects CafePlus: from 12.05.03 before 12.05.04.
CVE-2026-56321 Medium · 5.3 CWE-306 Jun 22, 2026
Capgo - Missing Authentication Middleware on GET /private/role_bindings Endpoint
Capgo (backend Supabase edge functions) before 12.128.2 does not apply the global authentication middleware to the GET /private/role_bindings/:org_id endpoint, unlike the POST and DELETE role_bindings routes, so unauthenticated requests reach the handler instead of being rejected at the middleware layer. The handler still performs its own authorization check and returns Unauthorized, so no direct data exposure occurs; the flaw is inconsistent authentication enforcement across HTTP methods that could enable authorization bypass if the handler logic changes.
CVE-2026-41047 Medium · 5.5 CWE-306 Jun 22, 2026
Information leak via “diff” methods in qSnapper
Lack of authentication when using the "snapshot diff" functions in qSnapper before version 1.3.3 allowed a local attacker to see otherwise read protected information.
CVE-2026-6673 Medium · 6.4 CWE-306 Jun 22, 2026
Mattermost Jira plugin had unauthenticated {{/ac/installed}} lifecycle callback during pending Jira Cloud install
Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 fail to authenticate Atlassian Connect installed callbacks, allowing a remote unauthenticated attacker to inject a rogue sharedSecret and disrupt the Jira integration via POST to /ac/installed during the pending-install window.. Mattermost Advisory ID: MMSA-2026-00654
CVE-2026-56299 Medium · 5.3 CWE-306 Jun 21, 2026
Capgo - Denial of Service via Unauthenticated OPTIONS Request to /build/upload Endpoint
Capgo before 12.128.2 contains an authentication bypass vulnerability in the /build/upload/:jobId/* endpoint that allows unauthenticated attackers to trigger consistent 500 errors. Remote attackers can send OPTIONS requests to bypass authentication middleware and invoke tusProxy logic with invalid credentials, enabling trivial request flooding and denial of service.
CVE-2026-56346 Medium · 6.5 CWE-306 Jun 20, 2026
AVideo - Unauthenticated PGP Message Decryption via decryptMessage.json.php Endpoint
AVideo through version 25.0 contains an authentication bypass vulnerability in the decryptMessage.json.php endpoint that allows unauthenticated users to decrypt PGP messages. Remote attackers can submit private keys, ciphertext, and passphrases to perform server-side decryption without credentials, exposing key material to logs and enabling resource exhaustion attacks.
CVE-2026-9142 Critical · 9.1 CWE-306 Jun 19, 2026
NI grpc-device Server: Insecure Default Credentials Without TLS
There is an insecure default credentials vulnerability in NI grpc-device when TLS configuration is not present and the server is bound beyond loopback.  This may allow an unauthenticated user access to the server on the local network.  This affects NI grpc-device 2.17.0 and prior versions.
CVE-2026-49357 High · 8.8 CWE-306 Jun 19, 2026
Streamable HTTP mode exposes LINE Desktop read/send tools without MCP authentication
Line Desktop MCP is a project that, while unaffiliated with the official line-bot-mcp-server, allows users to directly operate the LINE Desktop application on Windows or Mac via MCP. `line-desktop-mcp` supports a `--http-mode` Streamable HTTP transport for use with clients such as n8n. In this mode the server binds to `0.0.0.0` and exposes the MCP `/mcp` endpoint without an MCP-layer authentication check. Prior to version 1.1.2, any network client that can reach the port can initialize a session, list tools, and call tools that read LINE Desktop chat history or send LINE messages through the already logged-in desktop application. Version 1.1.2 fixes the issue.
CVE-2026-50242 Critical · 9.8 CWE-306 Jun 19, 2026
JetBrains Hub authentication bypass via direct database access (CVE-2026-50242)
In JetBrains Hub before 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, 2024.2.148429 authentication bypass via direct database access leading to administrative access was possible
CVE-2026-12046 Critical · 9.0 CWE-306 Jun 18, 2026
pgAdmin 4 SQL Editor missing authentication leading to unsafe deserialization
Two state-mutating endpoints in pgAdmin 4's SQL Editor blueprint -- DELETE /sqleditor/close/<trans_id> and POST /sqleditor/initialize/sqleditor/update_connection/<sgid>/<sid>/<did> -- were the only routes in the module missing the @pga_login_required decorator. Both reach a pickle.loads sink on session['gridData'][<trans_id>]['command_obj']: the close endpoint via close_sqleditor_session(), and update_sqleditor_connection via check_transaction_status(). In server mode these endpoints were reachable without any authenticated pgAdmin session. The defect is a missing-authentication-on-critical-function (CWE-306) wrapper around a deserialization-of-untrusted-data sink (CWE-502). Exploiting it for remote code execution requires the attacker to also forge a server-side session file whose gridData entry contains a malicious pickle payload, which in turn requires both (a) knowledge of pgAdmin's Flask SECRET_KEY (no chain to leak it is described here -- the attacker must already possess it) and (b) write access to pgAdmin's sessions/ directory on the host. Neither precondition is granted by this defect on its own. When those preconditions are met from another channel (misconfigured deployment, prior compromise, leaked configuration), the missing auth gate is the final hop that turns an existing partial compromise into unauthenticated code execution in the pgAdmin process -- and, by extension, on the host under whatever account runs pgAdmin. Fix is a one-line @pga_login_required decorator on each of the two endpoints, matching the convention used by every other route in the module. The is_authenticated / MFA chain now runs before the trans_id is dereferenced, so an unauthenticated request is rejected before reaching the deserialization path. The defect is server-mode only. In DESKTOP mode pgAdmin's before_request hook re-authenticates DESKTOP_USER on every request, so no endpoint can be exercised in an unauthenticated state and no auth decorator (or its absence) is meaningful. The accompanying regression test mirrors the attacker's path -- harvests an X-pgA-CSRFToken from GET /login and replays it against both endpoints -- and self-skips outside server mode for that reason; it is wired into the existing server-mode CI workflow alongside the data-isolation tests. This issue affects pgAdmin 4: from 6.9 before 9.16.
CVE-2026-54130 High · 7.5 CWE-306 Jun 18, 2026
M365 Copilot Information Disclosure Vulnerability
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
CVE-2026-49257 Critical · 10.0 CWE-306 Jun 18, 2026
mcp-pinot MCP server exposes unauthenticated HTTP endpoint with full Apache Pinot access
mcp-pinot is a Python-based Model Context Protocol (MCP) server for interacting with Apache Pinot. In versions 3.0.1 and below, mcp-pinot defaults to running an HTTP MCP server bound to 0.0.0.0:8080 with no authentication enabled. All MCP tools, including SQL query execution, schema creation, and table-config mutation, are reachable by any network-adjacent caller. The server proxies these calls using server-side Pinot credentials, producing a confused-deputy condition that yields full read/write access to the configured Pinot cluster. This issue has been fixed in version 3.1.0
CVE-2026-54103 Critical · 9.8 CWE-306 Jun 18, 2026
GAO EPDS and CBCA EDS: Missing Authentication on Password Change Endpoint
The U.S. Government Accountability Office (GAO) Electronic Protest Docketing System (EPDS) and Civilian Board of Contract Appeals (CBCA) Electronic Docketing System (EDS) does not authenticate password change requests to the '/update-profile/N' API endpoint. A remote, unauthenticated attacker could change an arbitrary user's password.