CVE-2026-107891

high

Description

musl libc before 1.2.7, when an untrusted regular expression is used with regcomp, has multiple integer overflows, possibly leading to incorrect allocation sizes and out-of-bounds heap writes.

References

https://www.openwall.com/lists/musl/2026/10/21/1

https://musl.libc.org

https://git.musl-libc.org/cgit/musl/commit/?id=7813e9119eb5fe681b6750b8a033a0490bca0941

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-117543

http://www.openwall.com/lists/oss-security/2026/10/21/18

Details

Source: Mitre, NVD

Published: 2026-11-05

Updated: 2026-11-12

Risk Information

CVSS v2

Base Score: 7.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.1

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