Low [CVE-2026-89162] Information disclosure via pcre2_serialize_encode
This low-severity Red Hat Linux advisory covers CVE-2026-89162 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.
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Summary
A flaw was found in PCRE2. The `pcre2_serialize_encode` function might disclose two bytes of information to an attacker.
This vulnerability typically occurs in scenarios where the attacker already has unsafe access to the system, making exploitation difficult. The primary impact is a limited information disclosure.
The vulnerability, which could expose two bytes of data, requires an adversary to have already gained unsafe access to the system, significantly limiting its exploitability in typical Red Hat deployments. Red Hat severity: Low — CVSS 2.9 (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).
Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: mariadb10.11; Red Hat package: mariadb11.8.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 38 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 38 minutes ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 38 minutes ago·verify at source
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