Auth bypass in Star7th Showdoc
CVE-2026-119661
ShowDoc through 3.9.5 contains an authorization bypass vulnerability in the api/paramDescLib/deleteEntries endpoint that checks edit permission only for the first supplied entry id. Authenticated attackers can place their own entry id first and append other users' entry ids to permanently delete those parameter-description entries.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/star7th/showdoc/issues/2612 (issue-tracking)
- github.com/star7th/showdoc/commit/53228511e656904abf7841c3d25ff78a4b5ce9c2 (patch)
- github.com/star7th/showdoc/blob/v3.9.5/server/app/Api/Controller/ParamDescLibCo… (technical-description)
- hackmd.io/@hieuPenguinnn/showdoc-paramdesclib-cross-item-idor-delete (third-party-advisory)
- github.com/star7th/showdoc (product)
- www.vulncheck.com/advisories/showdoc-through-3.9.5-authorization-bypass-via-par… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119661?
- CVE-2026-119661 is a medium-severity vulnerability in Star7th Showdoc, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.2/10. Published 2026-10-30.
- How severe is CVE-2026-119661?
- Medium severity. CVSS v3 base score is 4.2 out of 10.