CVE-2026-54010 json
Open WebUI: Forged chat-file link allows cross-user file read and deletion
published 2026-06-17 4 mo ago modified 2026-07-20 3 mo ago also GHSA-vrhc-3fr6-pc3c , PYSEC-2026-2763 , EUVD-2026-38532
- cvss
- 8.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI lets an authenticated user attach arbitrary file_id values to their own chat message without checking whether they own or can read those files. If the attacker then shares that chat and grants themselves read access, has_access_to_file() treats the victim file as accessible through the shared chat, and the file endpoints read or delete the victim file. This vulnerability is fixed in 0.9.6.
Patch / fix
- pypi open-webui 0.9.6
- openwebui open_webui 0.9.6
- github.com/open-webui/open-webui#24755 pull request
- github.com/open-webui/open-webui#25054 pull request
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 mo ago
Exploit prediction
0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-vrhc-3fr6-pc3c referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |
| OSV | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |
| GitHub | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | open-webui | <0.9.6 |
0.9.6 |
Affected products
- open-webui open-webui
Classification
References
-
github.com
/open-webui/open-webui/pull/24755
web
-
github.com
/open-webui/open-webui/pull/25054
web
-
github.com
/open-webui/open-webui/security/advisories/GHSA-vrhc-3fr6-pc3c
exploit, web, vendor-advisory, mitigation
-
nvd.nist.gov
/vuln/detail/CVE-2026-54010
advisory
-
github.com
/advisories/GHSA-vrhc-3fr6-pc3c
advisory
-
github.com
/open-webui/open-webui
package
-
github.com
/pypa/advisory-database/tree/main/vulns/open-webui/PYSEC-2026-2763.yaml
web
-
pypi.org
/project/open-webui
web, package
Sources
- CVE List CVE-2026-54010
- GitHub Advisory GHSA-vrhc-3fr6-pc3c
- NVD CVE-2026-54010
- OSV PYSEC-2026-2763
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.