CVE-2026-89162
pcre2: PCRE2: Information disclosure via pcre2_serialize_encode
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 11, 2026
Updated · September 21, 2026
Description
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.
Statement
This is a information disclosure flaw in PCRE2. 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.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
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.
CVSS / CWE
CVSS 3.1 · 2.9CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE-125 · Out-of-bounds Read