CVE-2026-21876
modsecurity-crs: modsecurity-crs - security update
CVE-2026-21876 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-21876, released January 8, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.3
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.1735
97th percentile
modsecurity-crs - security update
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| mod_security_crs · amzn 2023 | 4.2.0-1.amzn2023.0.2 | ALAS2023-2026-1399 | Feb 5, 2026 |
| modsecurity-crs · Debian 12.15 (bookworm) | 3.3.4-1+deb12u1 | DSA-6105-1 | Jan 21, 2026 |
| modsecurity-crs · Debian 13.5 (trixie) | 3.3.7-1+deb13u1 | DSA-6105-1 | Jan 21, 2026 |
| modsecurity-crs · Debian 14 | 3.3.8-1 | DEBIAN-CVE-2026-21876 | Jan 8, 2026 |
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