by Kastro
Paper/Archive/CVE-2026-75625

CVE-2026-75625

uber kraken — Kraken Agents Peer-to-Peer Download Cache Poisoning via Digest Verification Bypass

EPSS 0.2%public exploitCVSS 9.1
critical.is priorityof 100
40
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 15.3.153 × 203.1Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
kraken≤ 0.1.27–CNA

Scores by source

VulnCheck (CNA)9.1CVSS: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 (CNA)9.0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/uber/kraken/issues/638refgithub.com/uber/krakenwriteupgithub.com/uber/kraken/blob/master/lib/torrent/storage/agentstorage/torrent.gowriteupvulncheck.com/advisories/kraken-agents-peer-to-peer-download-cache-poisoning-via-digest-verification-bypass