CVE-2026-61463
Shiori contains a privilege escalation vulnerability in the account update endpoint that allows authenticated users to modify the owner field without authorization checks.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Shiori contains a privilege escalation vulnerability in the account update endpoint that allows authenticated users to modify the owner field without authorization checks. Attackers can escalate to administrator by submitting a crafted PATCH request with owner: true, then re-authenticate to obtain an admin JWT token granting full system access.
- CVSS 4.0
- 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.52% probability · 43th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Source
- disclosure@vulncheck.com
References
- https://github.com/go-shiori/shiori
- https://github.com/go-shiori/shiori/commit/6c8a7dbc11b131609bfda736b14d61c51f9027b2
- https://github.com/go-shiori/shiori/issues/1196
- https://www.vulncheck.com/advisories/shiori-authenticated-privilege-escalation-via-patch-api-v1-auth-account
- https://github.com/go-shiori/shiori/issues/1196
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.