CVE-2024-10908: An open redirect vulnerability in lm-sys/fastchat Release v0.2.36 allows a remote unauthenticated attacker to

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MEDIUM 6.1DOWNGRADE

CVE-2024-10908 is a medium-severity flaw (CVSS 6.1) affecting fastchat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An open redirect vulnerability in lm-sys/fastchat Release v0.2.36 allows a remote unauthenticated attacker to redirect users to arbitrary websites via a specially crafted URL. This can be exploited for phishing attacks, malware distribution, and credential theft.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-601
Published	2025-03-20
Last modified	2026-06-17

Publisher (CNA): huntr.dev · Vendor: lm-sys

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-03-20 10:15 UTCPublished CVE record published
2026-06-17 06:56 UTCUpdated Record last modified

lm-sys fastchat DOWNGRADE

Affected: 0.2.36

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.2.36

1. Check installed version

apt-cache policy fastchat || rpm -q fastchat || fastchat --version

2. No fixed release: DOWNGRADE to a release before 0.2.36 (Debian / Ubuntu)

apt-cache madison fastchat sudo apt install fastchat=<VERSION_BEFORE_0.2.36> sudo apt-mark hold fastchat

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fastchat sudo dnf downgrade fastchat-<VERSION_BEFORE_0.2.36> sudo dnf versionlock add fastchat

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: FastChat - Open Redirect

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-10908?

fastchat: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-10908 being exploited?

CVE-2024-10908 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-10908 affect?

CVE-2024-10908 affects fastchat. Severity is medium (CVSS 6.1). An open redirect vulnerability in lm-sys/fastchat Release v0.2.36 allows a remote unauthenticated attacker to redirect users to arbitrary websites via a specially crafted URL. This can be exploited for phishing attacks, malware distribution

How urgent is CVE-2024-10908?

Priority 40/100. Public exploit reference

Related CVEs

CVE-2024-12376 HIGH 7.5 DOWNGRADE A Server-Side Request Forgery (SSRF) vulnerability was identified in the lm-sys/fastchat web server, specifica
CVE-2024-11603 HIGH 7.5 DOWNGRADE A Server-Side Request Forgery (SSRF) vulnerability exists in lm-sys/fastchat version 0.2.36
CVE-2024-10912 HIGH 7.5 DOWNGRADE A Denial of Service (DoS) vulnerability exists in the file upload feature of lm-sys/fastchat version 0.2.36
CVE-2024-10907 HIGH 7.5 DOWNGRADE In lm-sys/fastchat Release v0.2.36, the server fails to handle excessive characters appended to the end of mul
CVE-2024-10044 CRITICAL 9.3 DOWNGRADE A Server-Side Request Forgery (SSRF) vulnerability exists in the POST /worker_generate_stream API endpoint of

References

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