High severity · published Jun 23, 2026
CVE-2026-54010
Open WebUI: Forged chat-file link allows cross-user file read and deletion
8.3
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
open-webui · open-webui
< 0.9.6 · source: vendor
OW
Open Webui · Openwebui
before 0.9.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-54010
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-54010
Exploit
https://github.com/open-webui/open-webui/security/advisories/GHSA-vrhc-3fr6-pc3c
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