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-2026-4437] Incorrect DNS response parsing via crafted DNS server response
Incorrect DNS response parsing via crafted DNS server response. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1286. Affected package(s): glibc-main, rhui5/haproxy-rhel9:1781525671, insights-proxy/insights-proxy-container-rhel9:1780420428, glibc, rhui5/installer-rhel9:1781525693, costmanagement/costmanagement-metrics-rhel9-operator:1780946239. Resolved in Red Hat advisory RHSA-2026:19061 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-33022] Denial of Service via long resolver names
Denial of Service via long resolver names. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-130. Affected package(s): openshift-pipelines/pipelines-controller-rhel9:1775707731, openshift-pipelines/pipelines-operator-bundle:1776925111, openshift-pipelines/pipelines-operator-bundle:1774871390, openshift-pipelines/pipelines-controller-rhel9:1774556221. Resolved in Red Hat advisory RHSA-2026:6170 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2006-10002] XML::Parser for Perl: Heap corruption and denial of service from crafted XML input
XML::Parser for Perl: Heap corruption and denial of service from crafted XML input. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-131. Affected package(s): perl-XML-Parser. Resolved in Red Hat advisory RHSA-2026:8608 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-4426] Denial of Service via malformed ISO file processing
Denial of Service via malformed ISO file processing. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1335. Affected package(s): libarchive-main. Resolved in Red Hat advisory RHSA-2026:8944 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 2 more.
Medium [CVE-2026-27980] Unbounded next/image disk cache growth can exhaust storage
Unbounded next/image disk cache growth can exhaust storage. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-770. Affected package(s): com.github.streamshub-console. Resolved in Red Hat advisory RHSA-2026:13571 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-4366] Blind Server-Side Request Forgery (SSRF) via HTTP Redirect Handling in Keycloak
Blind Server-Side Request Forgery (SSRF) via HTTP Redirect Handling in Keycloak. Red Hat rates this moderate (CVSS 5.8). Weakness: CWE-918. Affected package(s): rhbk/keycloak-operator-bundle:26.4.12, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-rhel9-operator:26.4. Resolved in Red Hat advisory RHSA-2026:19596 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2025-46299] Processing maliciously crafted web content may disclose internal states of the app
Processing maliciously crafted web content may disclose internal states of the app. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-909. Affected package(s): webkit2gtk3, webkitgtk4. Resolved in Red Hat advisory RHSA-2026:19206 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-20676] A website may be able to track users through Safari web extensions
A website may be able to track users through Safari web extensions. Red Hat rates this moderate (CVSS 4.3). Weakness: CWE-201. Affected package(s): webkit2gtk3, webkitgtk4. Resolved in Red Hat advisory RHSA-2026:19206 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-4462] Out of bounds read in Blink
Out of bounds read in Blink. 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-2026-4460] Out of bounds read in Skia
Out of bounds read in Skia. 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-2026-27448] TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback
TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-636. Affected package(s): pyopenssl-main. Resolved in Red Hat advisory RHSA-2026:7224 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-4324] Denial of Service and potential information disclosure via SQL injection
Denial of Service and potential information disclosure via SQL injection. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-89. Affected package(s): foreman, rubygem-katello, rubygem-fog-kubevirt, python-pulp-container, python-pulp-rpm, python-django. Resolved in Red Hat advisory RHSA-2026:5968 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9.
Medium [CVE-2026-4224] Stack overflow parsing XML with deeply nested DTD content models
Stack overflow parsing XML with deeply nested DTD content models. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-805. Affected package(s): python3.12, python3, python3.14, rhui5/rhua-rhel9:1779798222, rhui5/installer-rhel9:1779798165. Resolved in Red Hat advisory RHSA-2026:19019 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8.
Medium [CVE-2026-3644] Incomplete control character validation in http.cookies
Incomplete control character validation in http.cookies. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-791. Affected package(s): python3.12, python3, python3.14, rhui5/rhua-rhel9:1779798222, rhui5/installer-rhel9:1779798165. Resolved in Red Hat advisory RHSA-2026:19019 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8.
Medium [CVE-2026-4271] Denial of Service via Use-After-Free in HTTP/2 server
Denial of Service via Use-After-Free in HTTP/2 server. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-416. Affected package(s): libsoup3. Resolved in Red Hat advisory RHSA-2026:17482 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-31885] FreeRDP has an out-of-bounds read in ADPCM decoders due to missing predictor/step_index bounds checks
FreeRDP has an out-of-bounds read in ADPCM decoders due to missing predictor/step_index bounds checks. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-125. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:19142 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-31884] FreeRDP has a division-by-zero in ADPCM decoders when `nBlockAlign` is 0
FreeRDP has a division-by-zero in ADPCM decoders when `nBlockAlign` is 0. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-369. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:19142 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-29775] FreeRDP has a heap-buffer-overflow in bitmap_cache_put via OOB cacheId
FreeRDP has a heap-buffer-overflow in bitmap_cache_put via OOB cacheId. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-787. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:19142 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
Medium [CVE-2026-2673] OpenSSL TLS 1.3 server may choose unexpected key agreement group
OpenSSL TLS 1.3 server may choose unexpected key agreement group. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-325. Affected package(s): openssl-main, jbcs-httpd24-openssl. Resolved in Red Hat advisory RHSA-2026:7261 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2025-8766] Excessive permissions of /etc could lead to escalation of privilege in the noobaa-core container
Excessive permissions of /etc could lead to escalation of privilege in the noobaa-core container. Red Hat rates this important (CVSS 6.4). Weakness: CWE-276. 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 Openshift Data Foundation 4.22.