CVE-2026-109286CWE-346

CVE-2026-109286

High · published October 12, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
3.4
In the wild
Unconfirmed
What it is

Open WebUI from 0.7.0 before 0.11.4 contains a cross-origin message handling vulnerability in SyncStatsModal that allows any website to steal a signed-in user's session token by posting unvalidated verify:chat messages. Attackers can supply a path-traversal chat id redirecting the authenticated stats export request to the auths endpoint, receiving the victim's JWT for full API access.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
8.6 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00145 · 3.4th percentile
Weakness
CWE-346 · Origin Validation Error
Published
2026-10-12T21:17Z
References (3)
https://github.com/open-webui/open-webui/security/advisories/GHSA-vpq8-f445-hcq7 · [email protected]https://www.vulncheck.com/advisories/open-webui-0.7.0-before-0.11.4-session-token-theft-via-syncstatsmodal · [email protected]https://github.com/open-webui/open-webui/security/advisories/GHSA-vpq8-f445-hcq7 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 12 OCT 16:04Z
    Open WebUI 0.7.0 before 0.11.4 Session Token Theft via SyncStatsModal
    cvelistv5
  • 12 OCT 16:04Z
    Open WebUI 0.7.0 before 0.11.4 Session Token Theft via SyncStatsModal
    cvelistv5