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CVE-2026-3989

Medium

Elevated severity or exploit probability.

CVSS base
7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.4%
34.6th percentile
CISA KEV
Not listed
Weakness / dates
CWE-502
Published 2026-03-12 · modified 2026-08-10

CVSS breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack VectorLLocal
Attack ComplexityLLow
Privileges RequiredNNone
User InteractionRRequired
ScopeUUnchanged
ConfidentialityHHigh
IntegrityHHigh
AvailabilityHHigh

Timeline

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.

Affected

lmsys

References

Official: NVD · CVE.org