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CVE-2026-95619

Gcc: libstdc++ integer overflow in `new` operator

A flaw was found in libstdc++. An integer overflow can occur when processing large inputs to the aligned operator new in the C++ library. This vulnerability could lead to an undersized memory allocation, potentially causing memory corruption or application instability.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Hardened Images Hummingbird and 5 more
CVE-2026-102010

Gcc-toolset-15-gcc: gcc: gcc-toolset-16: gcc: denial of service via use-after-free in binary heap erase_if

A flaw was found in GCC. When an application calls the erase_if function on a binary heap priority queue in libstdc++, the library reallocates storage but fails to update its internal entry pointer. An attacker capable of triggering this operation can exploit this use-after-free condition, leading to a Denial of Service (DoS) via an application crash or potential memory corruption.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Vendors
Gnu Redhat
Products
Gcc Enterprise Linux Enterprise Linux Eus and 7 more
CVE-2026-96280

Flatpak: flatpak: buffer overflow in oci delta stream path names on 32-bit systems

The OCI delta stream parser read sizes as guint64 but passed them to GLib I/O and allocation functions expecting gsize (32 bits on 32-bit systems), causing undersized allocations while subsequent operations use the original 64-bit size, leading to heap buffer overflows. An attacker controlling an OCI registry can craft a delta stream that triggers this during flatpak install/update, potentially achieving code execution on 32-bit systems.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Flatpak Redhat
Products
Flatpak Enterprise Linux Enterprise Linux Eus and 6 more
CVE-2026-91147

Cockpit: cockpit: denial of service in `cockpit-ws` due to url-root handling without a trailing slash

A flaw was found in `cockpit-ws`. This vulnerability allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by sending a specially crafted request. When the `WebService.UrlRoot` is configured and a request is made to the exact URL-root prefix without a trailing slash, `cockpit-ws` can terminate unexpectedly. This issue leads to the unavailability of the Cockpit web service.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Openshift Dev Spaces Openshift Devspaces and 1 more
CVE-2026-76235

Cockpit-ws: cockpit: cockpit-ws: unauthenticated remote memory leak via cockpitlang cookie in send_login_html

A memory leak flaw was found in cockpit-ws. The login page handler leaks a heap allocation on every unauthenticated request that carries a CockpitLang cookie, allowing a remote unauthenticated attacker to exhaust memory on the host and cause a denial of service.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Openshift Dev Spaces Openshift Devspaces and 1 more
CVE-2026-85013

Environment-modules: command injection in environment-modules bash completion via malicious module names containing shell metacharacters

A flaw was found in environment-modules. A local attacker can exploit this vulnerability by placing a maliciously named modulefile in a location visible to the victim's `MODULEPATH`. When the victim uses Bash completion for `module` or `ml` commands, the malicious module name, containing shell metacharacters, is evaluated as a command. This can lead to arbitrary command execution in the completing user's shell, impacting their confidentiality, integrity, and availability.

CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Enterprise Linux Hardened Images and 3 more
CVE-2026-92747

Cockpit-machines: cockpit-machines: sensitive data exposure of guest credentials via json argument in process list

A flaw was found in `cockpit-machines`. This vulnerability allows a local attacker with the ability to inspect running processes to expose sensitive guest virtual machine (VM) credentials, such as `rootPassword` and `userPassword`. This occurs when the `install_machine.py` script passes these credentials as a JSON command-line argument during VM creation or installation. The exposure is limited to the period when the installation workflow is active and depends on host process-visibility policies.

CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux
CVE-2026-92768

Cockpit-machines: cockpit-machines: sensitive data exposure via command-line arguments

A flaw was found in cockpit-machines. This vulnerability allows a local attacker to expose sensitive Virtual Machine (VM) credentials, including plaintext passwords, by inspecting process command-line arguments during VM creation or installation. The cockpit-machines component passes password values directly on the command line, making them visible to other local users on systems where process arguments are not restricted. Successful exploitation leads to information disclosure, potentially compromising VM access.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux
CVE-2026-92745

Cockpit-machines: cockpit-machines: information disclosure of rhsm offline token via process arguments

A flaw was found in cockpit-machines. This vulnerability allows a local attacker with the ability to inspect process metadata to disclose a sensitive Red Hat Subscription Management (RHSM) offline token. The token is exposed when it is passed as a command-line argument to a helper script during the token validation process. Successful exploitation could lead to the compromise of confidentiality, as the exposed token can be used to request access tokens.

CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux
CVE-2026-96577

Oc-mirror__release-4.21: embedded local cache registry listens on all interfaces without authentication, with delete enabled

A flaw was found in oc-mirror. During mirroring operations, the embedded local cache registry binds to all network interfaces without authentication or encryption instead of restricting access to the local system. An unauthenticated attacker on an adjacent network can connect to the exposed service to push tampered container images, delete cached images, or access mirrored content.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Oc-mirror Redhat
Products
Oc-mirror Assisted Installer Openshift
CVE-2026-84725

Openjdk-orb: incomplete fix for cve-2026-15560,unauthed class loading via iiop in eap

when EAP runs with -secmgr, the openjdk-orb's JDKBridge honours attacker-supplied CDR codebase URLs during object unmarshalling on :3528, allowing an unauthenticated attacker to load and instantiate arbitrary classes from a remote URL in the server JVM before EJB security interceptors run.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Jboss Enterprise Application Platform Jboss Enterprise Application Platform Els
CVE-2026-86476

Gstreamer1-plugins-base: gst-plugins-base: heap buffer overflow via unvalidated gstvideometa plane extents in gst_video_frame_map_id and video_meta_deserialize

A flaw was found in gst-plugins-base. A heap buffer overflow can be triggered when processing video buffers whose attached GstVideoMeta metadata declares plane strides and offsets that exceed the actual backing memory allocation. The metadata is not range-checked during deserialization, and the video frame mapping code does not verify that the declared plane geometry fits within the buffer before allowing consumers to read or write video data. A local attacker who controls the sending side of a GStreamer inter-process IPC pipeline can deliver a crafted buffer carrying fabricated strides, causing the receiving process to read or write beyond heap boundaries. Successful exploitation can cause a denial of service or potentially allow code execution within the affected process.

CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Enterprise Linux Enterprise Linux Eus and 1 more
CVE-2026-96275

Flatpak: flatpak: arbitrary write access as root via extra-data extraction

A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extract_extra_data(). On system installs, the write happens as root. Two issues combine: `files/extra` is resolved via path operations that follow symlinks, and blob names from `xa.extra-data-sources` are not sanitized against `..` traversal.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Flatpak Redhat
Products
Flatpak Enterprise Linux Enterprise Linux Eus and 6 more
CVE-2026-88924

Gvfs: gvfs-admin socket ownership race permits local root

A flaw was found in the admin backend of gvfs. The privileged gvfsd-admin daemon changes the ownership of newly created private D-Bus sockets by calling the link-following chown() function on a pathname inside a user-controlled directory. A local attacker can exploit this via a Time-of-Check Time-of-Use (TOCTOU) race condition and exchange the socket pathname with a symbolic link pointing to an arbitrary root-owned file (such as /etc/pam.d/su). The daemon subsequently follows the symlink and changes the ownership of the targeted root-owned file to the attacker's user ID. This allows an authenticated local attacker to modify critical system files, leading to a full local privilege escalation to root.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Vendors
Gnome Redhat
Products
Gvfs Enterprise Linux Enterprise Linux Eus and 3 more
CVE-2026-84268

Gvfs: sftp: heap-based buffer overflow in read_reply()

A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause read_reply() to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing the operation to write past the intended boundaries. This issue allows a malicious server to corrupt adjacent heap memory in the gvfsd-sftp process, resulting in a denial of service as the process aborts upon detecting the heap corruption or potentially allowing arbitrary code execution.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Enterprise Linux Eus Rhel Aus and 5 more
CVE-2026-112201

Keycloak-services: keycloak-services: login-failure upsert trusts mysql/mariadb affected-row count

A flaw was found in the login-failure storage component of Keycloak, the identity and access management solution. This issue specifically affects deployments using MySQL or MariaDB databases in a multi-node configuration. When multiple failed login attempts occur simultaneously for the same account, a synchronization error can cause the system to enter a repetitive loop that locks the user's record in the database. This results in legitimate login attempts for that user being blocked and failing with an error. Furthermore, because some failures are not correctly recorded during this loop, the system's brute-force protection may not accurately count all failed attempts.

CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Build Keycloak Red Hat Single Sign On
CVE-2026-91149

Cockpit: cockpit: denial of service via unbounded connection thread spawning

A flaw was found in Cockpit. An unauthenticated remote attacker can exploit this vulnerability by initiating and sustaining numerous simultaneous connections to the `cockpit-tls` service. This forces the service to create an unbounded number of detached threads, consuming system resources such as memory and file descriptors. The primary consequence is a denial of service (DoS), leading to degradation or complete unavailability of the Cockpit service for legitimate users.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Openshift Dev Spaces Openshift Devspaces and 1 more
CVE-2026-92092

Openshift-ansible: openshift-ansible: installer container downloads and executes remote inventory script without integrity verification

A flaw was found in openshift-ansible. The installer container's `run` script downloads and executes remote inventory and dynamic scripts without integrity verification. A remote attacker, by performing a Man-in-the-Middle (MITM) attack or compromising the HTTP server providing these scripts, could substitute an arbitrary executable. This malicious executable would then run with the installer's user ID (UID) and full cluster-provisioning privileges, leading to arbitrary code execution.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Openshift Openshift Container Platform
CVE-2026-59251

Denial of service via exponential certificate policy tree growth in path validation

Allocation of resources without limits in Erlang/OTP public_key certificate path validation allows a remote unauthenticated attacker to cause denial of service by sending a crafted X.509 certificate chain during the TLS handshake. During RFC 5280 policy processing in public_key:pkix_path_validation/3, the certificate policy tree maintained by pubkey_policy_tree grows without an upper bound. When a certificate chain contains M policies per certificate and K certificates, the tree grows on the order of M^K nodes because pubkey_policy_tree:add_leaves/2 and pubkey_policy_tree:add_leaf_siblings/2 extend the tree per policy per certificate. A modest chain with many policies per certificate is enough to pin BEAM schedulers and exhaust the node's memory, taking down the entire VM. The attacker only needs to be able to present a certificate chain to the victim, which is the normal precondition for a TLS handshake, so exploitation succeeds against any incoming or outgoing TLS connection that validates the peer's chain (the default for SSL/TLS clients and mutual-TLS servers). This is the same vulnerability class as OpenSSL's X509_verify_cert policy tree DoS. This vulnerability is associated with program files lib/public_key/src/pubkey_policy_tree.erl and program routines pubkey_policy_tree:add_leaves/2 and pubkey_policy_tree:add_leaf_siblings/2. This issue affects OTP from OTP 26.2 before OTP 27.3.4.15, OTP 28.5.0.4, and OTP 29.0.4, corresponding to public_key from 1.15 before 1.17.1.5, 1.20.3.4, and 1.21.4.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Erlang Redhat
Products
Erlang/otp Erlang\/otp Erlang\/public Key and 2 more