HIGH

CVE-2026-103111

CVSS v3

7.6

HIGH

EPSS Score

0.2 %

exploit probability, as of 2026-09-30

CISA KEV

known exploited

Exploitation

—

SSVC status

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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Published: 2026-09-30
Last Modified: 2026-09-30

Frequently asked questions

What is CVE-2026-103111?

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.

Is CVE-2026-103111 actively exploited?

Active exploitation of CVE-2026-103111 has not been confirmed. Its EPSS score was 0.2% on 2026-09-30, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-103111?

CVE-2026-103111 has a CVSS v3 base score of 7.6 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L.

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