CVE-2026-75625
Kraken Agents Peer-to-Peer Download Cache Poisoning via Digest Verification Bypass
- State
- Published
- Severity
- 9.1 Critical
- Published
- Aug 18, 2026
- Updated
- Sep 24, 2026
- Reserved
- Aug 18, 2026
Description
Kraken agents fail to verify peer-to-peer downloaded blobs against their requested SHA-256 digest before committing to the content-addressable cache, relying only on CRC32 checksums for piece validation. Attackers on the agent-to-agent path or malicious peers can supply substituted content with forged CRC32 corrections that passes per-piece checks, poisoning the cache with attacker-chosen container image layers or manifests that are re-seeded and executed by other hosts.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.1 Critical | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H | VulnCheck |
| 3.1 | 9.0 Critical | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-354 Improper Validation of Integrity Check Value
Affected Products
| Product | Versions |
|---|---|
krakenuber |
|
References
- GitHub Issue #638issue-tracking
- https://github.com/uber/krakenproduct
- writePiece/WritePiece in lib/torrent/storage/agentstorage/torrent.gotechnical-description
- VulnCheck Advisory: Kraken Agents Peer-to-Peer Download Cache Poisoning via Digest Verification Bypassthird-party-advisory
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