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CVE-2026-89156

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.

PCRE2 在 10.48 之前版本存在一个漏洞：当攻击者能够提供无效的 UTF 数据时，在 JIT 回退后， 函数会发生越界读取（out-of-bounds read）。

CVSS 2.9 · Low

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services
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I. Basic Information for CVE-2026-89156

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
PCRE2 before 10.48 has a pcre2_match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
PCRE PCRE2 10.34 ~ 10.48 -

II. Public POCs for CVE-2026-89156

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III. Intelligence Information for CVE-2026-89156

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Vendor Advisories for CVE-2026-89156 (1)

Vendor Pages for CVE-2026-89156 (1)

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

CVE-2026-89161 7.4 HIGH PCRE2 10.48前 pcre2_jit_match 内存错误
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-2026-89162 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-125

V. Comments for CVE-2026-89156

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