Red Hat vulnerabilities

Published CVEs affecting Red Hat products: 1575 record(s), with severity, exploitation and fixes.

Exploited only (KEV) →

CVE-2026-108063 Medium · 5.5 CWE-476 Oct 9, 2026

Libhangul: null pointer dereference in hanja_new() when looking up a malformed hanja dictionary entry

A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify that an entry contains a valid value alongside its key. By providing a specially crafted dictionary file to an application that queries it, an attacker can trigger an unexpected application crash, resulting in a Denial of Service (DoS).

CVE-2026-107935 Critical · 9.3 CWE-22 Oct 9, 2026

Gvisor-tap-vsock: gvisor-tap-vsock: unathenticated arbitrary file deletion on the host via /expose

A path traversal vulnerability was found in gvproxy, the network forwarder provided by the gvisor-tap-vsock package. The unauthenticated /services/forwarder/expose endpoint does not validate the caller-supplied socket path, allowing an attacker to delete arbitrary files on the host system.

CVE-2026-107655 Medium · 4.0 CWE-476 Oct 9, 2026

Cups: null pointer dereference via embedded job ticket comments allows remote denial of service

A flaw was found in CUPS. When processing embedded job ticket comments within documents, the service improperly handles specific IPP attributes, causing an unhandled null pointer dereference. An unauthenticated attacker permitted to submit jobs to a shared printer queue can send a crafted Internet Printing Protocol (IPP) request to crash the print daemon, resulting in a temporary Denial of Service (DoS) for all printing services.

CVE-2026-107889 Medium · 5.5 CWE-79 Oct 9, 2026

Keycloak-services: keycloak-services: stored xss on login page via kcsanitize bypass

A flaw was found in the login theme rendering component of Keycloak. The issue occurs because the security filter responsible for cleaning user input can be bypassed, allowing a realm administrator to store malicious scripts in display fields. This could result in unauthorized JavaScript execution in the browsers of users visiting the login page, potentially leading to data exposure or session interference.

CVE-2026-107651 Medium · 5.5 CWE-122 Oct 8, 2026

Eog: eog: arbitrary code execution via heap buffer overflow in png metadata reader

A flaw was found in Eye of GNOME (eog). A heap-based buffer overflow exists in the PNG metadata reader due to improper state handling when parsing split metadata chunks. A remote attacker could exploit this flaw by enticing a user into opening a specially crafted PNG file, potentially leading to arbitrary code execution or a Denial of Service (DoS) via application crash.

CVE-2026-89091 High · 8.8 CWE-59 Oct 8, 2026

Ansible-core: ansible-core: ansible-galaxy collection install symlink path escape allows arbitrary file write / code execution

A flaw was found in ansible-core. When installing a collection with `ansible-galaxy collection install`, the archive extractor validates member paths using lexical path normalisation (os.path.abspath) instead of resolving symbolic links (os.path.realpath), and it performs no containment check on symlink-typed directory members before creating them. A crafted collection tarball can chain symlink directory entries so that a subsequent file member is written outside the intended destination directory. This allows an attacker who can get a victim to install a malicious collection to overwrite arbitrary files with the privileges of the user running ansible-galaxy, leading to code execution on the control node. This is a bypass of the fix for CVE-2020-10691.

CVE-2026-93017 High · 7.7 CWE-269 Oct 8, 2026

Insights-operator: gather serviceaccount has cluster-wide secret read plus nodes/proxy and cluster-reader

The `insights-operator-gather` ClusterRole grants the operator's service account read access to secrets in the core API group with no namespace or resourceNames restriction — therefore, access to every secret in every namespace in the cluster. Ref: https://github.com/openshift/insights-operator/blob/8f15e3157ff09f54ab22801f5b21da35a195cc6d/manifests/03-clusterrole.yaml#L368-L373 ``` - apiGroups: - "" resources: - secrets verbs: - get - list ``` By spawning a pod with the gather service account mounted, an attacker will be able to access any secret in any namespace. ``` spec: serviceAccountName:"gather" ```

CVE-2026-107623 Medium · 4.3 CWE-862 Oct 8, 2026

Keycloak-services: keycloak-services: oidc dcr read-modify-write silently disables offline token revocation

A flaw was found in the OIDC Dynamic Client Registration (DCR) component of Keycloak. A bug in the response serialization causes the backchannel logout offline token revocation setting to be omitted from responses. When a client performs a standard update, this missing information causes the setting to be silently disabled. As a result, offline tokens may remain valid even after a user session is terminated via backchannel logout.

CVE-2026-107604 Medium · 4.9 CWE-200 Oct 8, 2026

Keycloak-services: keycloak-services: view-clients role allows retrieval of active client secrets via installation provider endpoints

A flaw was found in the installation provider and client registration endpoints of the Keycloak identity management service. A realm administrator with only the read-only view-clients role can access the active primary secret of any confidential client, which should normally be restricted. This exposed secret can be used to impersonate the client and gain unauthorized access to its associated service account permissions.

CVE-2026-107565 Medium · 5.1 CWE-1284 Oct 8, 2026

Luksmeta: incomplete gap-boundary and overlap checks in luks1 metadata allocator allow data corruption

A flaw was found in luksmeta. A local attacker with administrative privileges can cause data corruption when saving metadata to a Linux Unified Key Setup (LUKS) device. Due to incorrect boundary calculations and flawed overlap detection, new metadata entries can be written beyond available free space or over existing records. This issue can corrupt stored encrypted payload data or existing metadata, potentially rendering the affected data inaccessible.

CVE-2026-107466 Medium · 6.1 CWE-22 Oct 8, 2026

Flatpak-builder: local file exfiltration via `file

A flaw was found in flatpak-builder. This vulnerability allows an attacker to cause information disclosure by convincing a user or continuous integration (CI) system to process a crafted build manifest. By specifying local file Uniform Resource Identifiers (URIs) within source download definitions, the builder bypasses directory confinement checks. As a result, sensitive host files accessible to the build process can be read and incorporated into the build artifacts.

CVE-2026-107445 Medium · 5.4 CWE-639 Oct 8, 2026

Rubygem-katello: katello: katello: katello flatpak remote repositories api cross-organization authorization bypass

A flaw was found in Katello where the Flatpak Remote Repositories API does not properly enforce authorization when accessing a flatpak remote repository by identifier. An authenticated user with permission to view flatpak remotes in one organization may be able to access flatpak remote repository information belonging to another organization. The same unscoped lookup is used by the mirror action, which may allow creating a repository in a product the user can edit that is configured with another organization's flatpak remote URL and stored remote credentials.

CVE-2026-107444 Medium · 4.3 CWE-639 Oct 8, 2026

Rubygem-katello: katello: katello: katello docker tags repositories api cross-organization authorization bypass

A flaw was found in Katello where the Docker Tags repositories API does not properly enforce organization scoping when listing repositories for a Docker meta tag. An authenticated user with permission to view products in one organization may be able to retrieve repository metadata associated with Docker tags belonging to another organization by supplying the tag identifier. This can result in unauthorized disclosure of repository configuration information across organization boundaries.

CVE-2026-107176 Medium · 6.8 CWE-250 Oct 7, 2026

Cluster-samples-operator: role reads all secrets in openshift-config, not just pull-secret

A flaw was found in the cluster-samples-operator. The RBAC Role coreos-pull-secret-reader in namespace openshift-config grants get, list, and watch permissions on all Secret resources without resourceNames scoping. The operator only requires access to the pull-secret Secret. If the samples-operator pod or its service account token is compromised through a separate vulnerability, an attacker could read all secrets in openshift-config, potentially including OAuth identity provider credentials, cloud provider credentials, and other sensitive cluster configuration.

CVE-2026-107161 High · 7.5 CWE-122 Oct 7, 2026

Cyrus-sasl: heap buffer overflow in cyrus-sasl add_to_challenge() allows malicious server to crash or compromise digest-md5 clients

A heap-based buffer overflow flaw was found in Cyrus SASL. The add_to_challenge() function in the DIGEST-MD5 plugin computes the size of the buffer needed for a challenge/response field before DIGEST-MD5 quoting is applied, but does not recompute that size when quoting (escaping special characters) makes the value longer. The under-sized buffer is then passed to strcat(), causing a heap-based out-of-bounds write whose size depends on attacker-controlled input. A malicious or on-path DIGEST-MD5 (or HTTP Digest) server can trigger this flaw in a connecting client by supplying a crafted challenge field, such as realm or nonce, most likely resulting in a crash of the client application.

CVE-2026-106067 Medium · 6.3 CWE-119 Oct 7, 2026

Gimp: gimp: heap buffer overflow in hot color filter on oversized image

A heap-based buffer overflow was found in GIMP’s Hot color filter plug-in. For very large images, a pixel buffer is allocated using overflowing 32-bit width * height (and related) arithmetic while the filter’s pixel access path uses the true image size, after integer overflow in the allocation size

CVE-2026-106066 Medium · 6.3 CWE-119 Oct 7, 2026

Gimp: gimp: heap buffer overflow in raw data export on oversized image dimensions

A heap-based buffer overflow was found in GIMP’s raw data export plug-in. When exporting very large images, g_malloc() sizing based on overflowing width * height * bytes-per-pixel can allocate far less memory than GEGL reads or writes during export, following integer overflow

CVE-2026-106065 Medium · 6.3 CWE-119 Oct 7, 2026

Gimp: gimp: heap buffer overflow in pcx export on oversized image dimensions

A heap-based buffer overflow was found in GIMP’s PCX export plug-in. For images with extremely large width and height, buffer allocation uses overflowing 32-bit width * height arithmetic while subsequent GEGL operations use the full extent, after integer overflow in size calculation

CVE-2026-107174 Medium · 6.4 CWE-61 Oct 7, 2026

Source-to-image: source-to-image: security boundary bypass via absolute symbolic link extraction

A flaw was found in source-to-image. When unpacking archive files, the application fails to properly sanitize symbolic links pointing to absolute file paths. An attacker who supplies a malicious builder image can exploit this vulnerability by embedding links pointing outside the extraction directory. This allows the attacker to bypass sandbox boundaries, potentially leading to unauthorized information disclosure or file modification on the host system.

CVE-2026-107169 Medium · 6.2 CWE-476 Oct 7, 2026

M17n-lib: null-pointer write in read_mtext_element() on malformed utf-8

A flaw was found in m17n-lib. An attacker could provide specially crafted or truncated UTF-8 input to trigger an unhandled null pointer dereference during text processing. This issue causes the application to crash unexpectedly, resulting in a Denial of Service (DoS).

CVE-2026-107167 Medium · 6.2 CWE-416 Oct 7, 2026

M17n-lib: heap use-after-free write in re_init_ic()

A flaw was found in m17n-lib. A user providing specially crafted text input can trigger a heap use-after-free condition during input-method state transitions. Under specific conditions, the library frees an internal input context object but subsequently attempts to write to that freed memory. This issue can cause applications relying on the library to crash, leading to a Denial of Service (DoS), or potentially allow arbitrary code execution.

CVE-2026-106064 Medium · 6.3 CWE-119 Oct 7, 2026

Gimp: gimp: heap buffer overflow in gif export on oversized image dimensions

A heap-based buffer overflow was found in GIMP’s GIF export plug-in. Exporting an image with very large width and height can cause 32-bit overflow when computing the pixel buffer size. The plug-in allocates a buffer based on the wrapped value while GEGL writes using the true image extent, rooted in integer overflow

CVE-2026-107170 Low · 2.9 CWE-476 Oct 7, 2026

M17n-lib: null dereference in minput_open_im() after failed m17n_init()

A flaw was found in m17n-lib. A partial failure during library initialization can leave an internal driver pointer uninitialized. Under specific error conditions, such as system resource exhaustion or database corruption, an application attempting to open an input method dereferences this null pointer without proper validation. This issue causes the application to crash, resulting in a Denial of Service (DoS).

CVE-2026-107168 Medium · 6.2 CWE-835 Oct 7, 2026

M17n-lib: parser infinite loop on malformed utf-8 in count_utf_8_chars()

A flaw was found in m17n-lib. By providing crafted input containing an invalid UTF-8 character sequence, an attacker can cause the text parsing function to enter an infinite loop. This issue leads to sustained high CPU utilization, resulting in a Denial of Service (DoS) for the affected application.

CVE-2026-107151 Medium · 5.9 CWE-306 Oct 7, 2026

Rubygem-smart_proxy_dynflow: task update and done callbacks accept unauthenticated requests

Missing authentication has been found in remote-execution task updates in the smart_proxy_dynflow package. The progress and completion callbacks accept a report when the one-time token is missing. A network attacker or user must already know the identifier of a running job. This applies when remote execution is set to pull or pull-mqtt mode. They can send their own job output and mark the job as a success or a failure. The job is then recorded with that result.