Quick answers
- Is CVE-2026-94084 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-94084 being exploited in the wild.
- How severe is CVE-2026-94084?
- Critical severity, with a CVSS score of 9.4, published 20 September 2026.
- Which products and versions are affected?
- OISF Suricata before 8.0.7.
- Is there a fix for CVE-2026-94084?
- A patch was published on 2026-09-09: Fix committed to main branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-94084 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-94084?
- Check whether you run OISF Suricata at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A use-after-free vulnerability exists in the Http2ThreadMultiBuf component when handling HTTP/2 response headers inspected by rules using the http.response_header keyword both with and without text transforms. The vulnerable code freed and reallocated buffers between inspection passes, leaving dangling pointers that were later dereferenced. The fix rewrites buffers in-place instead of deallocating and reallocating them, matching HTTP/1 behavior.
Affected products
- OISF Suricata before 8.0.7
Timeline
- 2026-09-15: disclosed
- 2026-09-09: patched: Fix committed to main branch
- 2026-09-20: advisory