CVE-2026-75625

CVSS 9.1 (critical) · published 2026-08-18

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.

Weakness: CWE-354

Source: NVD CVE-2026-75625

References

• https://github.com/uber/kraken
• https://github.com/uber/kraken/blob/master/lib/torrent/storage/agentstorage/torrent.go
• https://github.com/uber/kraken/issues/638
• https://www.vulncheck.com/advisories/kraken-agents-peer-to-peer-download-cache-poisoning-via-digest-verification-bypass
• https://github.com/uber/kraken/issues/638

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