Vulnerability · Published Mar 12, 2026 · Assigned by certcc
CVE-2026-3059CVE-2026-3059
Critical 9.8
In plain English
A critical-severity unsafe deserialization in SGLang from SGLang. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)1.6%top 24.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
SGLang's multimodal generation module is vulnerable to unauthenticated remote code execution through the ZMQ broker, which deserializes untrusted data using pickle.loads() without authentication.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | sglang | 0.5.10 | GHSA-rgq9-fqf5-fv58 |
| PyPI | sglang | 0.5.10 | PYSEC-2026-539 |
Affected products (as reported)
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/sgl-project/sglang/security/advisories/GHSA-3cp7-c6q2-94xr
- https://github.com/sgl-project/sglang/blob/main/python/sglang/multimodal_gen/runtime/scheduler_client.py
- https://orca.security/resources/blog/sglang-llm-framework-rce-vulnerabilities/
- https://github.com/sgl-project/sglang/pull/20904
- https://github.com/sgl-project/sglang/releases/tag/v0.5.10