VulnerabilityAnalyzed
CVE-2026-3989
SGLangs `replay_request_dump.py` contains an insecure pickle.load() without validation and proper deserialization.
HIGH 7.8EPSS 0.47%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.47%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
SGLangs `replay_request_dump.py` contains an insecure pickle.load() without validation and proper deserialization. An attacker can take advantage of this by providing a malicious .pkl file, which will execute the attackers code on the device running the script.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.47% probability · 39th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- lmsys/sglang
- Source
- cret@cert.org
References
- https://github.com/sgl-project/sglang/blob/main/scripts/playground/replay_request_dump.pyProduct
- https://github.com/sgl-project/sglang/pull/20904Issue Tracking, Patch
- https://github.com/sgl-project/sglang/releases/tag/v0.5.10Release Notes
- https://orca.security/resources/blog/sglang-llm-framework-rce-vulnerabilities/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.