CVE-2026-103111 PUBLISHED

Assigner: mitre
Reserved: 30.09.2026 Published: 30.09.2026 Updated: 30.09.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
CVSS Score: 7.6

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	PCRE
Product	PCRE2
Versions	Default: unaffected affected from 0 to 10.49 (excl.)

References

https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-r9hj-j2rw-4q3m

Problem Types

CWE-787 Out-of-bounds Write CWE