Open WebUI Vulnerable to Cross-Site Request Forgery (CSRF) via Image URL Manipulation

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

4.6 · CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L

EPSS

• CVE-2026-45317: 0.17% estimated exploitation activity in the next 30 days; percentile 5.71 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary An application-wide Cross-Site Request Forgery (CSRF) vulnerability was found Open-WebUl's image uploading functionality. An attacker can set an image URL to a malicious endpoint, allowing them to perform actions on behalf of a victim user. Any authenticated user can exploit this vulnerability, and any user who views the compromised image (e.g., a profile picture) will unknowingly send a GET request to the attacker-controlled URL. This can lead to cookie theft, denial of service (DoS), or other malicious actions. This can be exploited in various locations, including: • Profile picture • Model picture • Hidden images in shared chats • Images within shared notes Details Vulnerable Code: This appears to occur in most locations where images can be uploaded/rendered. Here are found sinks: Profile Image in chat • Note: rendering profile picture in chat • Location:…

Published by the source

14 May 2026, 20:18 UTC

Last modified by the source

13 Jul 2026, 16:43 UTC

Source last checked

26 Oct 2026, 13:41 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-j6w6-986j-2m2m

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-j6w6-986j-2m2m

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# Patch Next advisory brief: CVE-2026-45317

Advisory: Open WebUI Vulnerable to Cross-Site Request Forgery (CSRF) via Image URL Manipulation
IDs: CVE-2026-45317, GHSA-j6w6-986j-2m2m
Record: https://patchnext.com/advisories/cve-2026-45317 (revision 2, source checked 26 Oct 2026, 13:41 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.6)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: open-webui 0.9.3. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI open-webui: affected <= 0.9.2; fixed in 0.9.3

## Suggested inspection (read-only)
- `python -m pip show open-webui`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on open-webui.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-j6w6-986j-2m2m (OSV record GHSA-j6w6-986j-2m2m lists affected ranges: PyPI open-webui >=0 <0.9.3 (fixed))
- Verified: https://github.com/advisories/GHSA-j6w6-986j-2m2m (GitHub-reviewed advisory GHSA-j6w6-986j-2m2m lists affected ranges: PyPI open-webui >=0 <=0.9.2)

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