GHSA-7xcv-9j6c-2fmc

Modular Max Serve has Unsafe Deserialization vulnerability

Source: GitHub Advisory Database (reviewed) Critical CVE-2025-60455

Packages

Ecosystem	Package	Affected	Fixed in
PyPI	modular	< 25.6.0	25.6.0

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2025-60455 advisory
https://github.com/modular/modular/issues/4795 web
https://github.com/modular/modular/commit/10620059fb5c47fb0c30e5d21a8ff3b8d622fba4 web
https://github.com/modular/modular/commit/b20e749fa892dbe772e890a268002f732164d9f5 web
https://github.com/modular/modular/commit/ee9c4ab02345dd30bed8b79771b6909ff1b930a1 web
https://github.com/modular/modular package
https://github.com/modular/modular/blame/main/max/serve/kvcache_agent/kvcache_agent.py#L220 web
https://www.oligo.security/blog/shadowmq-how-code-reuse-spread-critical-vulnerabilities-across-the-ai-ecosystem web