What is GHSA-5x2x-26c9-4q5x?

GHSA-5x2x-26c9-4q5x is a security advisory published by GitHub Security Advisories with Medium severity. Integer overflow vulnerability has been found in "builtin.c" program file of gawk (do_sub()...

Which CVE IDs does GHSA-5x2x-26c9-4q5x cover?

GHSA-5x2x-26c9-4q5x covers the following CVE IDs: CVE-2026-40469. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-5x2x-26c9-4q5x?

GHSA-5x2x-26c9-4q5x has a CVSS v3 base score of 9.1, published by GitHub Security Advisories.

GHSA-5x2x-26c9-4q5xMediumCVSS 9.1

Integer overflow vulnerability has been found in "builtin.c" program file of gawk (do_sub()...

Vendor

GitHub Security Advisories

Published

July 13, 2026

Last Modified

July 14, 2026

🔗 CVE IDs covered (1)

CVE-2026-40469 →

📋 Description

Integer overflow vulnerability has been found in "builtin.c" program file of gawk (do_sub() routine). This issue could be used to overwrite gawk heap metadata and objects causing the program to crash. It affects 32-bit builds of gawk in versions 5.4.0 and below.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-40469
https://cert.pl/en/posts/2026/07/CVE-2026-40467
https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=ae1b2d508f46913269a9e62aceda3636afe8147b
https://github.com/advisories/GHSA-5x2x-26c9-4q5x