Auth bypass in Blinkospace Blinko
CVE-2026-113597
Blinko through 1.8.8 contains an insecure direct object reference vulnerability in the tag tRPC router that allows authenticated users to read and modify other users' tags by supplying arbitrary tag IDs. Attackers can enumerate sequential IDs via fullTagNameById, updateTagIcon, and updateTagOrder to reveal private note topics and tamper with tag icons and ordering.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
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/blinkospace/blinko/issues/1112 (issue-tracking)
- github.com/blinkospace/blinko/pull/1171 (issue-tracking, patch)
- github.com/blinkospace/blinko/blob/1.8.8/server/routerTrpc/tag.ts (technical-description)
- www.vulncheck.com/advisories/blinko-through-1.8.8-idor-via-tag-trpc-router-proc… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-113597?
- CVE-2026-113597 is a medium-severity vulnerability in Blinkospace Blinko, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-10-20.
- How severe is CVE-2026-113597?
- Medium severity. CVSS v3 base score is 5.4 out of 10.