HOMEVULNERABILITIESCVE-2026-3989
HIGH

CVE-2026-3989

Published: March 12, 2026· Updated: Mar 16, 2026

7.8
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:6.2th

Official 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.

NVD Source

Technical Analysis

CVE-2026-3989 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

All References (2)

→
https://github.com/sgl-project/sglang/blob/main/scripts/playground/replay_request_dump.py
→
https://orca.security/resources/blog/sglang-llm-framework-rce-vulnerabilities/

Quick Facts

CVE IDCVE-2026-3989
CVSS Score7.8 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.02%
PublishedMar 12, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-3989 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2026-3989·NVD