How severe is CVE-2024-11603?

CVE-2024-11603 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-11603 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-11603?

CVE-2024-11603 affects Lm-sys Fastchat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-11603?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-11603 have an EU (EUVD) identifier?

Yes. CVE-2024-11603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7033.

When was CVE-2024-11603 published?

CVE-2024-11603 was published on 2025-03-20 and last updated on 2026-06-17.

CVE-2024-11603

CVE-2024-11603 is a high-severity vulnerability in Lm-sys Fastchat with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-7033
Weakness: CWE-918
Affected product: Lm-sys Fastchat
Published: 2025-03-20
Last modified: 2026-06-17

Description

A Server-Side Request Forgery (SSRF) vulnerability exists in lm-sys/fastchat version 0.2.36. The vulnerability is present in the `/queue/join?` endpoint, where insufficient validation of the path parameter allows an attacker to send crafted requests. This can lead to unauthorized access to internal networks or the AWS metadata endpoint, potentially exposing sensitive data and compromising internal servers.

Frequently asked questions

What is CVE-2024-11603?: A Server-Side Request Forgery (SSRF) vulnerability exists in lm-sys/fastchat version 0.2.36. The vulnerability is present in the `/queue/join?` endpoint, where insufficient validation of the path parameter allows an attacker to send crafted requests. This can lead to unauthorized access to internal networks or the AWS metadata endpoint, potentially exposing sensitive data and compromising internal servers.
How severe is CVE-2024-11603?: CVE-2024-11603 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-11603 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-11603?: CVE-2024-11603 affects Lm-sys Fastchat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-11603?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-11603 have an EU (EUVD) identifier?: Yes. CVE-2024-11603 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7033.
When was CVE-2024-11603 published?: CVE-2024-11603 was published on 2025-03-20 and last updated on 2026-06-17.

References

https://huntr.com/bounties/89f1158d-4a75-4000-a1bd-f82dd1a62bff

Affected products (1)

cpe:2.3:a:lm-sys:fastchat:0.2.36:*:*:*:*:*:*:*

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