Meow hash 0.5/calico does not sufficiently thwart key recovery by an attacker who can…
Priority LOW 25CWE-203Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-203.
Summary
Meow hash 0.5/calico does not sufficiently thwart key recovery by an attacker who can query whether there's a collision in the bottom bits of the hashes of two messages, as demonstrated by an attack against a long-running web service that allows the attacker to infer collisions by measuring timing differences.
Why it matters now
EPSS 0.00741 54th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:meow_hash_project:meow_hash:0.5:*:*:*:*:*:*:* | 0.5 | Vulnerable | Meow Hash Project |
- cpe:2.3:a:meow_hash_project:meow_hash:0.5:*:*:*:*:*:*:* Versions 0.5 Vulnerable ·Meow Hash Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-37606
- 2026-10-03 Alias added: GHSA-gg5h-j88q-crj5
References
Sources
- CVE-2021-37606 · CVE Program
- CVE-2021-37606 · NVD
- FIRST EPSS
- GHSA-gg5h-j88q-crj5 · GitHub Advisory Database · CC BY 4.0
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