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CVE-2026-103111

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 10.49 之前的版本中，如果存在由攻击者控制的正则表达式且以特定方式使用 JIT API，则可能导致任意数据的越界写入漏洞。

CVSS 7.6 · High

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-103111

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
PCRE PCRE2 0 ~ 10.49 -

II. Public POCs for CVE-2026-103111

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III. Intelligence Information for CVE-2026-103111

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Vendor Advisories for CVE-2026-103111 (1)

IV. Related Vulnerabilities

Same product: PCRE2
Same vendor: PCRE
Same weakness: CWE-787

V. Comments for CVE-2026-103111

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