CVE-2026-43969
low
CVSS v3
3.2
CVSS v2
—
VIR risk
3.2
Description
cowlib: Cookie Request Header Injection via Unvalidated Encoder in cow_cookie:cookie/1
Predictions
Exploit likelihood
33%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-43969
Vendor advisory: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db — https://github.com/erlef/cowlib/commit/177953dd51540da11090666c1f007214127a1144
Vendor advisory: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db — https://cna.erlef.org/cves/CVE-2026-43969.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 0 |
| debian | sid | fixed | 0 |
| debian | trixie | fixed | 0 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| ninenines | cowlib | {"startIncluding":"2.9.0","endIncluding":"2.16.1"} | |
References
- https://cna.erlef.org/cves/CVE-2026-43969.html
- https://github.com/erlef/cowlib/commit/177953dd51540da11090666c1f007214127a1144
- https://osv.dev/vulnerability/EEF-CVE-2026-43969
- https://security-tracker.debian.org/tracker/CVE-2026-43969
- https://hex.pm/packages/cowlib
- https://nvd.nist.gov/vuln/detail/CVE-2026-43969
- https://github.com/ninenines/cowlib
- https://github.com/advisories/GHSA-g2wm-735q-3f56
CWEs
CWE-93
Verify integrity in audit chain (admin only). AS-IS.