Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-89161

CVE-2026-89161HIGH

PCRE PCRE2 — In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  H  H  H    7.8   .0013    2.0     —

AFFECTED
  Product  Versions     Fixed
  PCRE2    unspecified  —

TIMELINE
  Sep 11  Reserved by mitre
  Sep 11  Published (CNA: mitre)
  Sep 16  RESCORED — CVE-2026-89161 (PCRE2). CVSS 7.4 → 7.8 (NVD).

CWE-590 · CNA: mitre · CVSS v3.1 · 2 references · NVD status: Undergoing Analysis

Description

In PCRE2 before 10.48, pcre2_jit_match mishandles a previously copied subject being passed in as a context. An incorrect free operation can occur.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 11, 2026	Reserved	Reserved by mitre
September 11, 2026	Published	Published (CNA: mitre)
September 16, 2026	RESCORED	RESCORED — CVE-2026-89161 (PCRE2). CVSS 7.4 → 7.8 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
PCRE	PCRE2	—	—	—

Weaknesses

CWE-590

References (2)

https://github.com/PCRE2Project/pcre2/pull/937 [Patch]
https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48 [Release Notes]

Authoritative record: CVE-2026-89161 at cve.org

Vendors: pcre

Weaknesses: CWE-590

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-89161 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.