Description
Unsafe Deserialization vulnerability in Modular Max Serve before 25.6, specifically when the "--experimental-enable-kvcache-agent" feature is used allowing attackers to execute arbitrary code.
Metrics
CVSS 3.1 8.4/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- https://github.com/modular/modular/blame/main/max/serve/kvcache_agent/kvcache_agent.py#L220Broken Link
- https://github.com/modular/modular/commit/10620059fb5c47fb0c30e5d21a8ff3b8d622fba4Patch
- https://github.com/modular/modular/commit/b20e749fa892dbe772e890a268002f732164d9f5Patch
- https://github.com/modular/modular/commit/ee9c4ab02345dd30bed8b79771b6909ff1b930a1Patch
- https://github.com/modular/modular/issues/4795Issue Tracking, Patch
- https://www.oligo.security/blog/shadowmq-how-code-reuse-spread-critical-vulnerabilities-across-the-ai-ecosystemExploit, Third Party Advisory
Timeline
- Published
- Nov 18, 2025
- Last modified
- Nov 5, 2026
- NVD status
- Analyzed