Deserialization of untrusted data in SGLang
Priority HIGH 82CWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-502.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01762 78th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed sglang (PyPI): 0.5.10
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| SGLang | SGLang | 0.5.10 | — | No fix listed | CNA |
| — | sglang (PyPI) | before 0.5.10 | 0.5.10 | Patch available | GHSA-rgq9-fqf5-fv58 |
- SGLang VendorSGLang Affected 0.5.10 Fixed in — No fix listed CNA
- sglang (PyPI) Vendor— Affected before 0.5.10 Fixed in 0.5.10 Patch available GHSA-rgq9-fqf5-fv58
Remediation
- Fix · GHSA-rgq9-fqf5-fv58 sglang (PyPI) Fixed in 0.5.10 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-3059
- 2026-10-03 Alias added: GHSA-rgq9-fqf5-fv58
References
Other 6
- 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://github.com/sgl-project/sglang/pull/20904
- https://github.com/sgl-project/sglang/releases/tag/v0.5.10
- https://github.com/sgl-project/sglang
- https://orca.security/resources/blog/sglang-llm-framework-rce-vulnerabilities
More Sglang vulnerabilities
- TI-2026-13378 Deserialization of untrusted data in SGLang CVSS 3.1CRITICAL 9.8
- TI-2026-13373 SGLang contains an RCE vulnerability when the optional dumper subsystem is enabled… CVSS 3.1CRITICAL 9.8
- TI-2026-05050 Code injection in SGLang CVSS 3.1CRITICAL 9.8
- TI-2026-02644 Deserialization of untrusted data in SGLang CVSS 3.1CRITICAL 9.8
- TI-2026-13380 Missing authentication in SGLang CVSS 3.1HIGH 7.5
- TI-2026-13379 Insufficiently protected credentials in SGLang CVSS 3.1HIGH 7.5
Sources
- CVE-2026-3059 · CVE Program
- CVE-2026-3059 · NVD
- FIRST EPSS
- GHSA-rgq9-fqf5-fv58 · GitHub Advisory Database · CC BY 4.0
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