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📦 npm🐍 PyPI
Not in CISA KEV
HIGH severity

CVE-2024-12537 — open-webui

HIGH

CVE-2024-12537 is a high-severity (CVSS 7.5) vulnerability in open-webui. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Unauthenticated Denial of Service in open-webui/open-webui

Also known asGHSA-chf7-q7m5-fq92PYSEC-2026-1728
Published
Updated
Affected
2 pkgs
Patched
None yet
Exploits
None indexed
Exploitation data as of Aug 12, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

2 pkgs affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
open-webuinpm
82downloads / week

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.

Affected Packages

2 total
EcosystemPackageVulnerable rangeFix
📦npmopen-webuiall versionsNo fix
🐍PyPIopen-webuiall versionsNo fix

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for open-webui, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of open-webui for CVE-2024-12537. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

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.
O3 Security · Impact-Aware SCA

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