Medium

CVE-2026-116194 — Rclone 1.52.0 before 1.75.2 CSRF via pCloud OAuth Callback

Rclone from 1.52.0 before 1.75.2 contains a cross-site request forgery vulnerability in the pCloud backend's localhost OAuth callback, which disables the state check and trusts the hostname parameter. Malicious web pages can send a stateless request to port 53682 during authorization, planting attacker tokens and API hosts so later transfers reach the attacker.

Published Oct 25, 2026 · Updated Oct 29, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: VulnCheck

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.1% (30-day exploitation probability)+0
Technical severity (medium)+3
CISA SSVC: exploitation "poc"+5

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.12%

ahead of 2% of scored CVEs · Oct 29, 2026

Affects

Rclone

CVSS base

6.8

Medium · 3 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

Proof of concept

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Rclone Rclone).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Exploitation requires user interaction: tighten email/web filtering and warn affected users.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Rclone	Rclone	≥ 1.52.0 and < 1.75.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Rclone	Rclone	≥ 1.52.0 and < 1.75.2	Vulnerable	NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

High

Privileges required

None

User interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
7.6	CVSS 4.0	High	—	—	disclosure@vulncheck.com via NIST National Vulnerability Database
7.6	CVSS 4.0	High	—	—	VulnCheck via CVE Program (cve.org) e CISA ADP
6.8	CVSS 3.1	Medium	1.6	5.2	disclosure@vulncheck.com via NIST National Vulnerability Database
6.8	CVSS 3.1	Medium	—	—	GitHub, Inc. via GitHub Security Advisories
6.8	CVSS 3.1	Medium	—	—	VulnCheck via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N (score shown at the top: disclosure@vulncheck.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-346

Other CVEs with this weakness →

EPSS over time FIRST

Oct 26, 2026 → Oct 29, 2026 · 4 reading(s) · max 0.12%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).

web/proxy/WAF logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first.

2026
SSVC assessment updated
Oct 29, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · Analyzed → Modified
Oct 29, 2026 · NIST National Vulnerability Database
Affected products added · rclone/rclone
Oct 27, 2026 · NIST National Vulnerability Database
Source status changed · Awaiting Analysis → Analyzed
Oct 27, 2026 · NIST National Vulnerability Database
Source status changed · Received → Awaiting Analysis
Oct 26, 2026 · NIST National Vulnerability Database
Affected products added · rclone/rclone
Oct 25, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 25, 2026
CVSS changed · 6.8
Oct 25, 2026 · NIST National Vulnerability Database
Source status changed · → Received
Oct 25, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 25, 2026 · Alertas do Telegram
CVE published
Oct 25, 2026 · VulnCheck

Source activity

Repeated readings are counted rather than listed.

2× References added · Oct 25, 2026 – Oct 26, 2026
1× Official description updated · Oct 25, 2026 – Oct 25, 2026

References

4 on the record

github.com/rclone/rclone/security/advisories/GHSA-hvpr-p4pv-4f46
vendor-advisory, Vendor Advisory, NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2026-116194
GitHub Security Advisories
www.vulncheck.com/advisories/rclone-1.52.0-before-1.75.2-csrf-via-pcloud-oauth-callback
third-party-advisory, Third Party Advisory, NIST National Vulnerability Database
github.com/advisories/GHSA-9h2c-c4g3-hfx2
GitHub Security Advisories

Elsewhere on this site

Rclone
every CVE for this vendor

CWE-346
other pages naming this weakness

Related CVEs (same products)

Medium CVE-2026-116196 Rclone before v1.75.2 B2 Credential Leak on Redirect via --b2-download-url 5d
High CVE-2026-116189 rclone 1.55.0 before 1.75.2 selfupdate Signature Verification Bypass via SHA256SUMS 5d
Low CVE-2026-116190 rclone v1.56.0 before v1.75.2 WebDAV Credential Header Leak on Redirect 5d
High CVE-2026-116191 Rclone before 1.75.2 Path Traversal via serve webdav MKCOL 5d
Medium CVE-2026-116192 rclone from 1.37 before 1.74.2 SSRF via --rc-serve scheme-relative remote roots 5d
Medium CVE-2026-116195 Rclone before 1.75.2 Path Traversal via translateLink .rclonelink Suffix Trim 5d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-116194 is "Rclone 1.52.0 before 1.75.2 CSRF via pCloud OAuth Callback", rated Medium. It affects Rclone (Rclone); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.8 describes technical severity. EPSS 0.12% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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