CVE-2026-2903 MEDIUM

CVE-2026-2903: skvadrik re2c ast.cc check_and_merge_special_rules null pointer dereference

Vendor Skvadrik
Product re2c
Weakness CWE-476
Published February 22, 2026
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A flaw has been found in skvadrik re2c up to 4.4. Impacted is the function check_and_merge_special_rules of the file src/parse/ast.cc. This manipulation causes null pointer dereference. The attack can only be executed locally. The exploit has been published and may be used. Patch name: febeb977936f9519a25d9fbd10ff8256358cdb97. It is suggested to install a patch to address this issue.

Key dates

02Disclosure timeline

February 22, 2026 CVE published
February 26, 2026 Record updated