TI-2026-01762 Aliases CVE-2026-2109 GHSA-34mv-wr5q-834h

jsbroks COCO Annotator Delete Category undo improper authorization

MEDIUM 57CWE-266Published 2026-02-07 · Updated 2026-02-23

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Privilege escalation, Security bypass
Confidentiality · integrity · availability: None · Low · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266 and CWE-285.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00429 37th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
jsbroks	COCO Annotator	0.11.0; 0.11.1	—	No fix listed	CNA

COCO Annotator Vendorjsbroks Affected 0.11.0; 0.11.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:jsbroks:coco_annotator::::::::	up to 0.11.1	Vulnerable	jsbroks

cpe:2.3:a:jsbroks:coco_annotator:*:*:*:*:*:*:*:* Versions up to 0.11.1 Vulnerable ·jsbroks

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-2109
2026-10-03 Alias added: GHSA-34mv-wr5q-834h

References

Exploit 1

https://github.com/nmmorette/vulnerability-research/blob/main/BFLA%20COCO%20Annotator%20in%20DELETE%20api%20undo/BFLA%20COCO%20Annotator%20in%20DELETE%20api%20undo%202f1ef09b8736807aa1f7ede4b64fa35d.md

TI-2026-01761 jsbroks COCO Annotator Endpoint long_task denial of service CVSS 4.0MEDIUM 6.9
TI-2024-09401 jsbroks COCO Annotator Session predictable state CVSS 4.0MEDIUM 6.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences