CVE-2026-17544
Public on 2026-07-30
Modified on 2026-08-02
Description
Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions from 8.4.* before 8.4.24 and from 8.5.* before 8.5.9.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | php | Not Affected | ||
| Amazon Linux 2 - Php8.2 Extra | php | Not Affected | ||
| Amazon Linux 2023 | php8.1 | Not Affected | ||
| Amazon Linux 2023 | php8.2 | Not Affected | ||
| Amazon Linux 2023 | php8.3 | Not Affected | ||
| Amazon Linux 2023 | php8.4 | 2026-08-04 | ALAS2023-2026-2042 | Fixed |
| Amazon Linux 2023 | php8.5 | 2026-08-04 | ALAS2023-2026-2041 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H |
| NVD | CVSSv3 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |