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CVE-2026-89161

Quick assessment

Affected
PCRE PCRE2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 PCRE2 10.48 之前的版本中， 对之前已复制的主题字符串（subject）作为上下文传入时处理不当，可能导致不正确的 操作。

CVSS 7.4 · High
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I. Basic Information for CVE-2026-89161

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放并不在堆上的内存
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
PCRE PCRE2 0 ~ 10.48 -

II. Public POCs for CVE-2026-89161

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III. Intelligence Information for CVE-2026-89161

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Patches & Fixes for CVE-2026-89161 (1)

Vendor Pages for CVE-2026-89161 (1)

Same Patch Batch · PCRE · 2026-09-11 · 6 CVEs total

CVE-2026-89158 6.5 MEDIUM PCRE2 10.48前32位整数溢出越界写
CVE-2026-89157 5.7 MEDIUM PCRE2 10.48 32位平台越界写漏洞
CVE-2026-89160 3.7 LOW PCRE2 10.48之前 越界读取
CVE-2026-89156 2.9 LOW PCRE2 10.48 前 JIT 回退致越界读
CVE-2026-89162 2.9 LOW PCRE2 10.48之前信息泄露漏洞

IV. Related Vulnerabilities

Same product: PCRE2
Same vendor: PCRE
Same weakness: CWE-590

V. Comments for CVE-2026-89161

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