Amazon Linux 2023 Security Advisory: ALAS2023-2026-1562
Advisory Released Date: 2026-04-13
Advisory Updated Date: 2026-04-13
Severity:
Medium
Issue Overview:
Whitespace padding in filenames bypasses file upload extension checks
NOTE: https://github.com/coreruleset/coreruleset/security/advisories/GHSA-rw5f-9w43-gv2w (CVE-2026-33691)
Affected Packages:
mod_security_crs
Issue Correction:
Run dnf update mod_security_crs --releasever 2023.11.20260413 or dnf update --advisory ALAS2023-2026-1562 --releasever 2023.11.20260413 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
noarch:
mod_security_crs-4.2.0-1.amzn2023.0.3.noarch
src:
mod_security_crs-4.2.0-1.amzn2023.0.3.src