CVE-2026-41293
critical
CVSS v3
9.8
CVSS v2
—
VIR risk
9.8
Description
Apache Tomcat - HTTP/2 request headers not validated
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-41293
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-41293.html
Vendor advisory: security@apache.org — https://lists.apache.org/thread/qwg0q16z7xkb2qrr853wdll5531mvl1r
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 9.0.70-2 |
| debian | forky | fixed | 9.0.70-2 |
| debian | sid | fixed | 11.0.22-1 |
| debian | trixie | fixed | 9.0.70-2 |
| debian | bullseye | fixed | 9.0.70-2 |
Package impact
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| apache | tomcat | {"startIncluding":"8.5.0","endIncluding":"8.5.100"} | |
References
- https://lists.apache.org/thread/qwg0q16z7xkb2qrr853wdll5531mvl1r
- http://www.openwall.com/lists/oss-security/2026/05/12/13
- https://nvd.nist.gov/vuln/detail/CVE-2026-41293
- https://github.com/apache/tomcat/commit/19f17a257797e8d139b33ff9c88d362a273be148
- https://github.com/apache/tomcat/commit/1c70480466572c9192ed412ebefcd43fc63137fd
- https://github.com/apache/tomcat/commit/2a2476460e823789f530a22207873ea8cd6eff3b
- https://github.com/apache/tomcat/commit/3915fd27e6810b14ccd21e3d900bd8faef44d3df
- https://github.com/apache/tomcat/commit/57c2b3bfd62792631e1df24cf4237b990a0b36fa
- https://github.com/apache/tomcat/commit/c2925554c677da57390f940d856871e18daaacab
- https://github.com/apache/tomcat/commit/cf9452443bcbf3b1a4b435ef7d624364f1b65ca3
- https://github.com/apache/tomcat/commit/e5cef9618c3f4fd31bd6fb1e83f0f18022280dac
- https://github.com/apache/tomcat/commit/f72a6174ab1f0f5a053435f80448b4f6837fe6d7
- https://github.com/apache/tomcat
- https://tomcat.apache.org/security-10.html
- https://tomcat.apache.org/security-11.html
- https://tomcat.apache.org/security-9.html
- https://www.suse.com/security/cve/CVE-2026-41293.html
- https://security-tracker.debian.org/tracker/CVE-2026-41293
- https://github.com/advisories/GHSA-r29c-68gh-xp6x
CWEs
CWE-20
Verify integrity in audit chain (admin only). AS-IS.