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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.

PUBLISHED Reserved 2026-07-09 | Published 2026-07-13 | Updated 2026-07-13 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

Improper Privilege Management

Product status

Default status
affected

Any version before 1.8.0
affected

Credits

George Chen reporter

References

github.com/go-shiori/shiori/issues/1196 exploit

github.com/go-shiori/shiori/issues/1196 (GitHub Issue) issue-tracking

github.com/go-shiori/shiori (Product Details) product

github.com/...ommit/6c8a7dbc11b131609bfda736b14d61c51f9027b2 (Patch Commit) patch

www.vulncheck.com/...scalation-via-patch-api-v1-auth-account third-party-advisory

cve.org (CVE-2026-61463)

nvd.nist.gov (CVE-2026-61463)

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