CVE-2026-42784

Sequoia-openpgp: sequoia-openpgp: cryptographic integrity compromise via key flag confusion

A flaw was found in sequoia-openpgp. The library incorrectly infers key flags for older certificates when a key flags subpacket is missing, leading to a discrepancy in how key capabilities are viewed. This key flag confusion allows an attacker to bypass the back-signature check. Consequently, an attacker can illegitimately bind an arbitrary subkey to their own certificate and forge signatures, completely compromising cryptographic integrity.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat Sequoia-pgp

Products

Enterprise Linux Ansible Automation Platform Ansible Automation Platform Developer and 15 more

CVE-2026-115456

Gcc: out-of-bounds read in std::from_chars

A flaw was found in gcc. An attacker could cause a Denial of Service (DoS) by passing a string that is not null-terminated to the std::from_chars() function in the libstdc++ library. This issue triggers an out-of-bounds read beyond the allocated buffer, potentially leading to invalid data parsing or an application crash.

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed

Vendors

Gcc Red Hat Redhat

Products

Gcc Enterprise Linux Enterprise Linux and 6 more

CVE-2026-101295

Oc-mirror: oc-mirror: path traversal / arbitrary file write in operator catalog image extraction

Path traversal / arbitrary file write in oc-mirror's operator catalog image extraction. When mirroring operator catalogs using either the legacy v1 path (--v1) or the OCI feature path (--use-oci-feature), oc-mirror extracts tar entries from catalog image layers without validating that file paths resolve within the intended destination directory.

CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed

Vendors

Oc-mirror Redhat

Products

Oc-mirror Assisted Installer Openshift and 1 more

CVE-2026-92824

Libmodulemd: libmodulemd: out-of-bounds read when emitting rpm-map artifacts

A flaw was found in libmodulemd. In the module stream v2 rpm-map emission path, an inner loop incorrectly uses the count of digest algorithms as its bound instead of the number of checksums in the current digest table. Crafted modulemd v2 metadata with multiple digest types can trigger an out-of-bounds read during YAML serialization, typically causing a crash and resulting in a denial of service.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Hardened Images and 4 more

CVE-2026-92823

Libmodulemd: libmodulemd: missing decompressed-size limit when parsing compressed yaml

A flaw was found in libmodulemd. In builds with rpmio support enabled, compressed modulemd YAML is decompressed through a custom read handler that does not enforce a cumulative decompressed-size limit before parsing. An attacker who can supply a highly compressible compressed YAML file can cause excessive CPU and memory consumption, resulting in a denial of service.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Hardened Images and 4 more

CVE-2026-92822

Libmodulemd: libmodulemd: unbounded recursion when parsing nested xmd yaml

A flaw was found in libmodulemd. When parsing module metadata, the xmd field is converted into nested GVariant values through recursive YAML mapping and sequence helpers without a recursion-depth or node-count limit. An attacker who can supply crafted modulemd YAML with deeply nested xmd content can cause stack exhaustion or excessive resource consumption, resulting in a denial of service.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Hardened Images and 4 more

CVE-2026-123876

Podman: containers-common: containers-common: default seccomp af_vsock/netlink_audit deny rules bypassable via 32-bit truncation

A flaw was found in the default seccomp profile used by Podman via containers-common. Deny rules for AF_VSOCK and NETLINK_AUDIT compared socket arguments with unmasked 64-bit equality. Because the kernel truncates those int arguments to 32 bits, setting upper bits can bypass the deny rules.

CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed

Vendors

Containers Red Hat Redhat

Products

Podman Enterprise Linux Enterprise Linux and 4 more

CVE-2026-93017

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" ```

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Openshift Openshift Container Platform

CVE-2026-75888

Openshift/console: openshift/console: authenticated ssrf via helm chart url fetch

A flaw was found in the OpenShift console. An authenticated console user can exploit a Server-Side Request Forgery (SSRF) vulnerability by providing a specially crafted Helm chart URL without proper validation. This allows the user to make the console pod fetch arbitrary URLs, potentially leading to the disclosure of sensitive information through error messages or enabling blind port scanning within the cluster.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Openshift Openshift Container Platform

CVE-2026-49329

Openshift/oauth-server: openshift/oauth-server: quadratic-time dos via accept-language header underscore bypass on unauthenticated login endpoints

A flaw was found in openshift/oauth-server. The OAuth login and error page endpoints pass the unauthenticated Accept-Language header to golang.org/x/text/language.ParseAcceptLanguage() without input validation. A bypass of the CVE-2022-32149 mitigation exists: the upstream guard counts only '-' characters but the internal BCP 47 scanner aliases '_' to '-' after the guard check. An unauthenticated attacker can send a crafted Accept-Language header using '_' separators to trigger quadratic-time parsing, consuming excessive CPU and denying authentication to all cluster users.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Openshift Openshift Container Platform

CVE-2026-114691

Gcc: integer wrap in `std

A flaw was found in the libstdc++ component of GCC. An attacker who can provide an excessively large element count to a boolean vector (std::vector<bool>) constructor can trigger an integer wrap during internal memory calculations. This issue leaves the container in an inconsistent state, leading to out-of-bounds memory access and resulting in an application crash or a Denial of Service (DoS) during subsequent operations.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

Gcc Red Hat Redhat

Products

Gcc Enterprise Linux Enterprise Linux and 6 more

CVE-2026-114690

Gcc: confirmed out-of-bounds read/write in libstdc++ parallel `std

A flaw was found in GCC. An out-of-bounds memory access vulnerability exists in the libstdc++ parallel search implementation due to an undersized internal buffer. A local attacker can exploit this flaw by providing crafted search data to an application compiled with parallel mode, causing the process to crash and leading to a Denial of Service (DoS).

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed

Vendors

Gcc Red Hat Redhat

Products

Gcc Enterprise Linux Enterprise Linux and 6 more

CVE-2026-107174

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.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Openshift Openshift Container Platform Openshift Serverless and 4 more

CVE-2026-127101

Sssd: sssd: null pointer dereference in pam responder when protocol version negotiation is skipped

A flaw was found in SSSD's PAM responder. A local attacker can send an authentication request without first negotiating the client protocol version. The responder dereferences a NULL protocol-version pointer and crashes, disrupting SSSD-backed authentication. Repeated crafted requests can sustain the denial of service.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat Sssd

Products

Enterprise Linux Enterprise Linux Openshift and 3 more

CVE-2026-127099

Sssd: sssd: stack buffer overflow during rsa certificate-to-ssh key conversion

A flaw was found in SSSD's conversion of X.509 certificate RSA public keys to SSH keys. Missing size checks before copying RSA components into fixed-size stack buffers can cause a stack buffer overflow. An attacker able to supply a certificate with oversized RSA components that passes the configured certificate checks can cause denial of service and corrupt SSH responder memory.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat Sssd

Products

Enterprise Linux Enterprise Linux Openshift and 3 more

CVE-2026-121876

Sandboxed-containers: kernel: systemd-gpt-auto-generator: guest data leakage in confidential computing (sandboxed containers)

A flaw was found in the interaction between systemd-gpt-auto-generator and confidential computing guest VM images in OpenShift Sandboxed Containers (confidential peer pods). systemd-gpt-auto-generator automatically discovers and mounts GPT partitions by type GUID at boot with no user confirmation. In the confidential computing threat model, where the host/hypervisor is the adversary, a malicious host can inject partitions into the guest's virtual disk. Most critically, injecting a swap partition causes the guest kernel to page out TEE-encrypted memory to a host-controlled block device, breaking the confidentiality guarantee of the hardware TEE (AMD SEV-SNP, Intel TDX). The PodVM images use a GPT-partitioned disk with dm-verity on the root partition. However, the roothash= kernel parameter only disables root auto-discovery — non-root partitions (swap, /home, /var, /srv, /var/tmp) are still auto-discovered and mounted. The generator is shipped unmasked in the RHEL systemd-udev subpackage, and no kernel command line parameter in the measured UKI addon disables it. Additionally, the PodVM measurement script captures PCRs 3, 9, 11, and 12, but not PCR 5 (GPT partition table), so partition table modifications are not detected by remote attestation.

CVSS 3.1 · 7.9 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Openshift and 2 more

CVE-2026-115455

Gcc: stack overflow in std::bitset on libstdc++

A flaw was found in GCC libstdc++. When an application extracts data into a bitset from a wide-character stream, internal stack memory allocation fails to properly account for character size and alignment. An attacker capable of supplying crafted input to an affected application could trigger a stack-based buffer overflow leading denial of service (DoS).

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Gcc Red Hat Redhat

Products

Gcc Enterprise Linux Enterprise Linux and 5 more

CVE-2026-127100

Sssd: sssd: local denial of service through unchecked oauth2 json code type in pam responder

A flaw was found in SSSD's PAM responder on builds with the JSON PAM extension enabled. A local attacker can submit a crafted authentication request containing a non-string OAuth2 code value. Missing JSON type validation leads to a NULL pointer dereference, terminating the PAM responder and disrupting SSSD-backed authentication.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat Sssd

Products

Enterprise Linux Enterprise Linux Openshift and 3 more

CVE-2026-108472

Xfsprogs: xfsprogs: local privilege escalation via command injection in xfs_admin

A flaw was found in the xfs_admin utility in xfsprogs. The tool does not properly validate user-supplied parameters, allowing operating system command injection. A local attacker can exploit this issue by providing crafted input arguments, which may result in arbitrary command execution and local privilege escalation depending on how xfs_admin is executed.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Enterprise Linux Eus and 4 more

CVE-2026-19706

Openshift/installer: openshift installer: unconditional csr approval during agent-based installation (abi) bootstrap

During ABI bootstrap, the bootstrap node's approve-csr.service approves and signs every CSR without identity validation. An attacker on the install network can retrieve the unauthenticated Ignition file (ports 22623/22624), extract a limited kubeconfig, submit a CSR for CN=system:admin, receive the signed certificate, and gain full cluster-admin access. Exploitable only during the narrow bootstrap window.

CVSS 3.1 · 8.3 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Assisted Installer Assisted Installer For Red Hat Openshift Container Platform Multicluster Engine and 3 more