CVE-2026-43970
high
CVSS v3
—
CVSS v4 NEW
8.2
VIR risk
8.0
Description
cowlib: Decompression Bomb in cow_spdy:inflate/2 Allows Memory Exhaustion via Crafted SPDY Frame
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Affected 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Affected | — |
| forky | Affected | — |
| bullseye | Affected | — |
| bookworm | Affected | — |
Windows Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
References
- https://cna.erlef.org/cves/CVE-2026-43970.html
- https://github.com/ninenines/cowlib/commit/16aad3fb9f81f5cda4d1706ff0c54237c619c282
- https://osv.dev/vulnerability/EEF-CVE-2026-43970
- https://security-tracker.debian.org/tracker/CVE-2026-43970
- https://hex.pm/packages/cowlib
- https://nvd.nist.gov/vuln/detail/CVE-2026-43970
- https://github.com/ninenines/cowlib
- https://github.com/advisories/GHSA-84f2-rp86-235p
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-43970
CWEs
CWE-409
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.