CVE-2026-89161Patch(pcre / pcre2)

LOWCVSS 7.8 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch pcre pcre2 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-590

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • pcre2

Threat summary

  • Patch or workaround signal is available
  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 3 signals
  • General: 1 classified signal
  • Peaked at 2 mentions on most recent observed day (2026-09-17)
  • 3 total mentions across 2 days

Affected systems

Vendors
Products
pcre2

1 version affected across 1 product

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-09-11: 1Mentions · 2026-09-17: 2Patch / Workaround · 2026-09-17: 2Technical Details · 2026-09-11: 1Technical Details · 2026-09-17: 209-1109-17
Signal classification2 categories
Patch
266.7%
General
133.3%
Referenced assets1 URL
By indicator
Classification over time
DateTotalLabels
2026-09-111
General1
2026-09-172
Patch2
Full discourse3 posts
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 HIGH severity CVE-2026-89161 (CVSS 7.4) affects PCRE2 <10.48. Memory corruption via pcre2_jit_match mishandling can lead to incorrect free operations. Update to 10.48+ immediately. #CVE #Vulnerability #PatchNow #ThreatIntel https://t.co/Wdf8AEhgMu

    Post summary

    The tweet discloses CVE-2026-89161 affecting PCRE2 < 10.48 with memory corruption details and CVSS 7.4, and explicitly urges updating to 10.48+ as remediation.

    0000035
    138 followersView on X
  • DFIR Lab@DFIR_Lab
    Patch

    🚨 HIGH severity CVE-2026-89161 (CVSS 7.4) affects PCRE2 &lt;10.48. Incorrect free operation in pcre2_jit_match can lead to memory corruption. Upgrade to v10.48+ immediately. #CVE #Vulnerability #PatchNow https://t.co/hzbHyO1TRS

    Post summary

    The tweet discloses CVE‑2026‑89161, a high‑severity memory‑corruption vulnerability in PCRE2 versions before 10.48, and urges immediate upgrade to v10.48+.

    0000033
    138 followersView on X
  • CVE@CVEnew
    General

    CVE-2026-89161 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. https://www.cve.org/CVERecord?id=CVE-2026-89161

    Post summary

    The post references CVE-2026-89161 and describes a double-free issue in PCRE2, but it contains no PoC, exploit code, patch information, or claim of active exploitation.

    00000918
    58.1K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Apppcrepcre2---
Apppcrepcre210.48--

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