Open WebUI unauthenticated DoS vulnerability
open-webui
An unauthenticated denial of service vulnerability in Open WebUI causes high CPU and memory usage through multipart boundary processing. Attackers can exploit multiple endpoints to trigger server resource exhaustion.
disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why
- fix status
- Fix status unknown
- first report
- 20 Mar 2025
- last update
- 20 Mar 2025
Timeline · 1
Sources · 1
Advisories and databases
- 2025-03-20GHSA-5ccf-884p-4jjq: Open WebUI Unauthenticated Multipart Boundary Denial of Service (DoS) VulnerabilityGitHub Advisory Database · github.com/advisories/GHSA-5ccf-884p-4jjq
Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.
Classification
- lane
- Patch now
- AI role
- Attack on AI
- categories
- Infrastructure vulnerability
- severity
- 2 · Disclosed vulnerability
- fix status
- Fix status unknown
- targets
- Framework / tooling
- owasp llm top 10
- LLM03:2025 Supply Chain
- mitre atlas
- no technique for these categories
- dates
- happened 20 Mar 2025 · first reported 20 Mar 2025
- origin
- GitHub Advisory DatabaseVulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
- record
- confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 10:14Z
Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned
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the brief as text
# Open WebUI unauthenticated DoS vulnerability https://gcdradar.vercel.app/incidents/ghsa-5ccf-884p-4jjq-open-webui-unauthenticated-dos-vulnerabi · AIR-2025-0215 · closed 2025-03-20 - Lane: Patch now - Severity: 2 (Disclosed vulnerability) - Fix status: Fix status unknown - First reported: 2025-03-20 - AI role: Attack on AI - Products: open-webui ## Summary An unauthenticated denial of service vulnerability in Open WebUI causes high CPU and memory usage through multipart boundary processing. Attackers can exploit multiple endpoints to trigger server resource exhaustion. ## What to do No action recorded; read the sources below and the vendor's advisory. ## Latest updates - 2025-03-20: GHSA-5ccf-884p-4jjq: Open WebUI Unauthenticated Multipart Boundary Denial of Service (DoS) Vulnerability (https://github.com/advisories/GHSA-5ccf-884p-4jjq) ## Sources - 2025-03-20 GitHub Advisory Database: GHSA-5ccf-884p-4jjq: Open WebUI Unauthenticated Multipart Boundary Denial of Service (DoS) Vulnerability https://github.com/advisories/GHSA-5ccf-884p-4jjq Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.
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AI