CVE-2024-12537

CVE-2024-12537 is a high-severity vulnerability in Openwebui Open Webui 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-770.

Key facts

Description

In version 0.3.32 of open-webui/open-webui, the absence of authentication mechanisms allows any unauthenticated attacker to access the `api/v1/utils/code/format` endpoint. If a malicious actor sends a POST request with an excessively high volume of content, the server could become completely unresponsive. This could lead to severe performance issues, causing the server to become unresponsive or experience significant degradation, ultimately resulting in service interruptions for legitimate users.

Frequently asked questions

What is CVE-2024-12537?
In version 0.3.32 of open-webui/open-webui, the absence of authentication mechanisms allows any unauthenticated attacker to access the `api/v1/utils/code/format` endpoint. If a malicious actor sends a POST request with an excessively high volume of content, the server could become completely unresponsive. This could lead to severe performance issues, causing the server to become unresponsive or experience significant degradation, ultimately resulting in service interruptions for legitimate users.
How severe is CVE-2024-12537?
CVE-2024-12537 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 none, integrity none, and availability high.
Is CVE-2024-12537 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-12537?
CVE-2024-12537 affects Openwebui Open Webui. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-12537?
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-2024-12537 have an EU (EUVD) identifier?
Yes. CVE-2024-12537 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7012.
When was CVE-2024-12537 published?
CVE-2024-12537 was published on 2025-03-20 and last updated on 2026-06-17.

References

Affected products (1)

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