Advisoriesby IbismodularGHSA-7xcv-9j6c-2fmc
Modular Max Serve has Unsafe Deserialization vulnerability
Fix: upgrade to 25.6.0 or later
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| modular PyPI | < 25.6.0 | 25.6.0 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-502
- Also known as
- CVE-2025-60455, PYSEC-2025-253, PYSEC-2026-427
- nvd.nist.gov/vuln/detail/CVE-2025-60455
- github.com/modular/modular/issues/4795
- github.com/modular/modular/commit/10620059fb5c47fb0c30e5d21a8ff3b8d622fba4
- github.com/modular/modular/commit/b20e749fa892dbe772e890a268002f732164d9f5
- github.com/modular/modular/commit/ee9c4ab02345dd30bed8b79771b6909ff1b930a1
- github.com/modular/modular
- github.com/modular/modular/blame/main/max/serve/kvcache_agent/kvcache_agent.py#L220
- www.oligo.security/blog/shadowmq-how-code-reuse-spread-critical-vulnerabilities-across-the-ai-ecosystem