CVE-2026-43968
medium
CVSS v3
4.0
CVSS v2
—
VIR risk
4.0
Description
ninenines cowlib: Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability allows SSE event splitting and injection via unvalidated field values
Predictions
Exploit likelihood
50%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-43968
Vendor advisory: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db — https://github.com/ninenines/cowlib/commit/6165fc40efa159ba1cceee7e7981e790acba5d9c
Vendor advisory: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db — https://cna.erlef.org/cves/CVE-2026-43968.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":"2.6.0","endExcluding":"2.16.1"} | 2.16.1 |
References
- https://cna.erlef.org/cves/CVE-2026-43968.html
- https://github.com/ninenines/cowlib/commit/6165fc40efa159ba1cceee7e7981e790acba5d9c
- https://osv.dev/vulnerability/EEF-CVE-2026-43968
- https://security-tracker.debian.org/tracker/CVE-2026-43968
- https://hex.pm/packages/cowlib
- https://nvd.nist.gov/vuln/detail/CVE-2026-43968
- https://github.com/ninenines/cowlib
- https://github.com/ninenines/cowlib/releases/tag/2.16.1
- https://github.com/advisories/GHSA-hv23-4qp7-8c8r
CWEs
CWE-93
Verify integrity in audit chain (admin only). AS-IS.