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TI-2026-69470 Aliases CVE-2026-93034GHSA-w4hv-c72g-pqx6

Untrusted deserialization in SGLang lets attackers execute code

Priority MEDIUM 49CWE-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
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-502.

Summary

SGLang from 0 through v0.5.20 is affected. The ZMQ message decoder unpickles PickleWrapper payloads with pickle.loads() without type allowlisting or authentication (CWE-502). The flaw also persists on the msgpack path even when SGLANG_USE_PICKLE_IPC is disabled. An unauthenticated remote attacker can execute arbitrary code when data-parallel attention is enabled with a non-loopback --dist-init-addr setting.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

SGLang contains an arbitrary code execution vulnerability caused by the ZMQ message decoder unconditionally deserializing PickleWrapper payloads via pickle.loads() in _maybe_unwrap_pickle without type allowlisting or authentication; this vulnerability persists via the msgpack path even when SGLANG_USE_PICKLE_IPC is disabled, and becomes remotely exploitable if data-parallel attention is enabled with a non-loopback --dist-init-addr setting.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0046 40th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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

VendorProductAffected versionsFixed inStatusSource
SGLangSGLangup to v0.5.20—No fix listedCNA
  • SGLang VendorSGLang Affected up to v0.5.20 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:lmsys:sglang:*:*:*:*:*:*:*:*——SGLang
  • cpe:2.3:a:lmsys:sglang:*:*:*:*:*:*:*:* Versions — — ·SGLang

Remediation

The sources list no fixed version for SGLang.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-08 Threatist record created from CVE-2026-93034
  2. 2026-10-08 Alias added: GHSA-w4hv-c72g-pqx6
  3. 2026-10-09 CVSS score added · CISA ADP
  4. 2026-10-09 Weakness changed · CISA ADP
  5. 2026-10-09 CISA SSVC decision points changed
  6. 2026-10-09 Priority changed: LOW → MEDIUM

References

Other 2

  • TI-2026-62707 Deserialization of untrusted data in SGLang CVSS 3.1CRITICAL 9.8
  • TI-2026-59347 Code injection in SGLang CVSS 3.1CRITICAL 9.8
  • 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
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences