Auth bypass in Jsbroks Coco Annotator
CVE-2026-2109
A vulnerability was identified in jsbroks COCO Annotator up to 0.11.1. Affected is an unknown function of the file /api/undo/ of the component Delete Category Handler. Such manipulation of the argument ID leads to improper authorization. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
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:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (32.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Jsbroks Coco Annotator — versions 0.11.0, 0.11.1
- Jsbroks Coco Annotator
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/nmmorette/vulnerability-research/blob/main/BFLA COCO Annotator in DE… (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-2109?
- CVE-2026-2109 is a medium-severity vulnerability in Jsbroks Coco Annotator, classified under Incorrect Privilege Assignment. CVSS score: 5.4/10. Published 2026-02-07.
- How severe is CVE-2026-2109?
- Medium severity. CVSS v3 base score is 5.4 out of 10.