CVE-2024-8053 Improper Authentication in open-webui/open-webui
Unauthenticated attackers can access the PDF generation endpoint, causing denial of service via resource exhaustion and unauthorized service misuse.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-8053?
CVE-2024-8053 is a high-severity missing authorization vulnerability in Openwebui Open Webui, published on 20 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In version v0.3.10 of open-webui/open-webui, the `api/v1/utils/pdf` endpoint lacks authentication mechanisms, allowing unauthenticated attackers to access the PDF generation service. This vulnerability can be exploited by sending a POST request with an excessively large payload, potentially leading to server resource exhaustion and denial of service (DoS). Additionally, unauthorized users can misuse the endpoint to generate PDFs without verification, resulting in service misuse and potential operational and financial impacts.
Weakness: CWE-306
Which versions are affected by CVE-2024-8053?
3 open source packages ship an affected version, including open-webui. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
open-webui PyPI | All versions to 0.3.10 | None |
open-webui PyPI | All versions to 0.3.10 | None |
open-webui PyPI | All versions | 0.5.13 |
Products include Openwebui Open Webui.
How do I fix CVE-2024-8053?
Upgrade open-webui to 0.5.13 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2024-8053 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-8053 exists.
Other vulnerabilities in Openwebui Open Webui
- CVE-2026-44551 Open WebUI: LDAP Empty Password Authentication Bypass
- CVE-2026-56400 open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation
- CVE-2024-8017 Cross-site Scripting (XSS) in open-webui/open-webui
- CVE-2026-45672 Open WebUI: Jupyter code execution works despite `ENABLE_CODE_EXECUTION=false` — feature gate bypassed
- CVE-2026-87995 Open WebUI: Same-origin XSS to account takeover via terminal port-preview iframe hardcoding allow-same-origin
Sources
Also known as GHSA-9vf8-xgwm-97r8, PYSEC-2026-1725.