Kraken Agents Peer-to-Peer Download Cache Poisoning via Digest Verification Bypass
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-75625
- 2026-10-03 Alias added: GHSA-xpm6-xhxf-22h5
References
More uber vulnerabilities
- TI-2026-62532 Uber Kraken through 0.1.29 Path Traversal via tag parameter CVSS 4.0HIGH 8.7
- TI-2022-23695 kraken <= 0.1.4 has an arbitrary file read vulnerability via the component testfs. CVSS 3.1HIGH 7.5
- TI-2017-09741 Hard-coded credentials in UberEATS: Uber for Food Delivery CVSS 3.0HIGH 7.5
Sources
- CVE-2026-75625 · CVE Program
- CVE-2026-75625 · NVD
- FIRST EPSS
- GHSA-xpm6-xhxf-22h5 · GitHub Advisory Database · CC BY 4.0
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