Buffer Overflow Vulnerability in PCRE2 from the PCRE2Project
CVE-2026-89162

2.9LOW

Key Information:

Vendor

Pcre

Status
Pcre2
Vendor
CVE Published:
11 September 2026

What is CVE-2026-89162?

A vulnerability exists in the PCRE2 library versions prior to 10.48, specifically in the function pcre2_serialize_encode. This flaw presents a risk of exposing sensitive data, as it may inadvertently reveal two bytes of information to adversaries. This issue typically arises in scenarios where the adversary already has some level of unsafe access to the environment. It is crucial for users and developers relying on these versions of PCRE2 to upgrade to the latest version to mitigate potential risks.

Affected Version(s)

PCRE2 10.45 < 10.48

References

https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-...
https://github.com/PCRE2Project/pcre2/security/advisories...

CVSS V3.1

Score:
2.9
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.