CVE-2026-75625
Kraken Agents Peer-to-Peer Download Cache Poisoning via Digest Verification Bypass
CVSS Score
9.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-354 |
| Vendor | uber |
| Product | kraken |
| Published | Aug 18, 2026 |
| Last Updated | Aug 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
uber / kraken
0 ≤ 0.1.27
References
github.com: https://github.com/uber/kraken/issues/638 github.com: https://github.com/uber/kraken github.com: https://github.com/uber/kraken/blob/master/lib/torrent/storage/agentstorage/torrent.go vulncheck.com: https://www.vulncheck.com/advisories/kraken-agents-peer-to-peer-download-cache-poisoning-via-digest-verification-bypass
Credits
🔍 geo-chen