Red Hat Linux Security Advisories & CVEs
3200 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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Security advisories for your Red Hat release
Pick your distribution release to see every advisory issued for it and its severity mix. Fixes ship as errata — keep the system patched. This is the release's advisory history, not a per-package scan.
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Red Hat Security Data API
Red Hat Enterprise Linux errata (RHSA) via the official Red Hat Security Data API — CVE severity, CVSS and affected packages. A credential-free official source.
Latest Red Hat advisories
Medium [CVE-2026-10930] Out of bounds read in ANGLE
Out of bounds read in ANGLE. Red Hat rates this important (CVSS 6.5). Weakness: CWE-125. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-10981] Insufficient validation of untrusted input in Codecs
Insufficient validation of untrusted input in Codecs. Red Hat rates this important (CVSS 6.8). Weakness: CWE-346. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-10977] Uninitialized Use in Skia
Uninitialized Use in Skia. Red Hat rates this important (CVSS 6.8). Weakness: CWE-824. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-10938] Insufficient validation of untrusted input in Input
Insufficient validation of untrusted input in Input. Red Hat rates this important (CVSS 6.8). Weakness: CWE-501. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-50262] out-of-bounds read/write in GLX ChangeDrawableAttributes
out-of-bounds read/write in GLX ChangeDrawableAttributes. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-125. Affected package(s): xorg-x11-server, xorg-x11-server-Xwayland, tigervnc. Resolved in Red Hat advisory RHSA-2026:26562 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 8 more.
Medium [CVE-2026-50263] use-after-free information disclosure in CreateSaverWindow()
use-after-free information disclosure in CreateSaverWindow(). Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-416. Affected package(s): xorg-x11-server, xorg-x11-server-Xwayland, tigervnc. Resolved in Red Hat advisory RHSA-2026:26562 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 8 more.
Medium [CVE-2026-45149] Denial of Service due to excessive memory allocation when expanding large numeric ranges
Denial of Service due to excessive memory allocation when expanding large numeric ranges. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-770. Affected package(s): nodejs20-main, rust-main, llvm21-main, nodejs26-main, nodejs25-main, yarnpkg-main. Resolved in Red Hat advisory RHSA-2026:22380 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-42250] Denial of Service in bzip2recover via a specially crafted file
Denial of Service in bzip2recover via a specially crafted file. Red Hat rates this moderate (CVSS 5). Weakness: CWE-193. Affected package(s): bzip2-main. Resolved in Red Hat advisory RHSA-2026:30268 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9673] CSV Injection vulnerability allows arbitrary code execution via `preventCsvInjection` bypass.
CSV Injection vulnerability allows arbitrary code execution via `preventCsvInjection` bypass.. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-1236. Affected package(s): rhdh/rhdh-hub-rhel9:1782761244. Resolved in Red Hat advisory RHSA-2026:33574 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9798] brute-force protection bypass in ciba flow
A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily locked due to repeated failed login attempts, an attacker with valid client credentials can exploit the Client-Initiated Backchannel Authentication (CIBA) flow to bypass this brute-force protection. This allows continued authentication attempts and token issuance even when the account should be locked, potentially enabling further unauthorized access attempts. Affected products named by the advisory: Red Hat build of Keycloak 26.4; Red Hat build of Keycloak 26.6.
Medium [CVE-2026-9796] Keycloak: keycloak: privilege escalation via time-of-check to time-of-use (toctou) vulnerability
A flaw was found in Keycloak. An authenticated administrator with the `manage-clients` role can exploit a Time-of-check to time-of-use (TOCTOU) vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to `realm-admin` for all users within the realm, granting them extensive control over the system. The composite role relationship persists even after the attacker's own permissions are revoked and across system reboots. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N). Weakness: CWE-367. Affected Red Hat products: Red Hat Build of Keycloak. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-9801] Denial of Service via malformed LDAP password policy response
Denial of Service via malformed LDAP password policy response. Red Hat rates this moderate (CVSS 4.9). Weakness: CWE-1284. Affected package(s): rhbk/keycloak-operator-bundle:26.4.13, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-operator-bundle:26.6.3, rhbk/keycloak-rhel9:26.6. Resolved in Red Hat advisory RHSA-2026:30049 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9802] Unauthorized account access via replayed refresh tokens after cluster restart
Unauthorized account access via replayed refresh tokens after cluster restart. Red Hat rates this moderate (CVSS 6.8). Weakness: CWE-613. Affected package(s): rhbk/keycloak-operator-bundle:26.4.13, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-operator-bundle:26.6.3, rhbk/keycloak-rhel9:26.6. Resolved in Red Hat advisory RHSA-2026:30049 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9803] Denial of Service via malformed Authorization header
Denial of Service via malformed Authorization header. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-125. Affected package(s): rhbk/keycloak-operator-bundle:26.4.13, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-operator-bundle:26.6.3, rhbk/keycloak-rhel9:26.6. Resolved in Red Hat advisory RHSA-2026:30049 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9793] security policy bypass in jwe-encrypted request object processing
A flaw was found in Keycloak. When a JSON Web Encryption (JWE) encrypted request object is submitted, Keycloak may incorrectly process unsigned claims if the decrypted content is raw JSON, bypassing the configured signature policy. This allows a remote attacker to submit unauthorized claims, leading to a compromise of data integrity within the OpenID Connect (OIDC) authorization flow. While a redirect URI allowlist acts as a compensating control, this vulnerability violates OIDC Core and Financial-grade API (FAPI) signing requirements. Affected products named by the advisory: Red Hat build of Keycloak 26.4; Red Hat build of Keycloak 26.6.
Medium [CVE-2026-9794] Information disclosure via SAML ECP endpoint
Information disclosure via SAML ECP endpoint. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-209. Affected package(s): rhbk/keycloak-operator-bundle:26.4.13, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-operator-bundle:26.6.3, rhbk/keycloak-rhel9:26.6. Resolved in Red Hat advisory RHSA-2026:30049 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9792] Security restriction bypass allows unauthorized ROPC token acquisition
Security restriction bypass allows unauthorized ROPC token acquisition. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-280. Affected package(s): rhbk/keycloak-operator-bundle:26.4.13, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-operator-bundle:26.6.3, rhbk/keycloak-rhel9:26.6. Resolved in Red Hat advisory RHSA-2026:30049 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9791] Organization Data Leak After Feature Disabled in Keycloak
Organization Data Leak After Feature Disabled in Keycloak. Red Hat rates this moderate (CVSS 4.3). Weakness: CWE-863. Affected package(s): rhbk/keycloak-operator-bundle:26.4.13, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-operator-bundle:26.6.3, rhbk/keycloak-rhel9:26.6. Resolved in Red Hat advisory RHSA-2026:30049 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-44605] heap buffer overflow in NDB slot table parsing
heap buffer overflow in NDB slot table parsing. Red Hat rates this low (CVSS 5.5). Weakness: CWE-190. Affected package(s): rpm-main. Resolved in Red Hat advisory RHSA-2026:33507 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat Hardened Images.
Medium [CVE-2026-46125] remove station if connection prep fails
remove station if connection prep fails. Red Hat rates this important (CVSS 6.8). Weakness: CWE-825. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:27288 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; and 2 more.