Which versions of Coco Annotator are affected by CVE-2026-2109?

Organizations using jsbroks COCO Annotator should be aware of moderate risk from CVE-2026-2109 rated CVSS 5.4. Exploitation could compromise the security of affected deployments.

Is there a public PoC exploit available for CVE-2026-2109?

Yes, a public proof-of-concept exploit is available for CVE-2026-2109. Prioritise patching immediately. EPSS: 0.0%.

Coco Annotator CVE-2026-2109

Q: What is the CVSS score of CVE-2026-2109?

CVE-2026-2109 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

LOW

Incorrect Privilege Assignment (CWE-266)

2026-02-07 cna@vuldb.com

Information Disclosure Coco Annotator

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

5.4 (MEDIUM) 2.1 (LOW)

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 27, 2026 - 13:43 vuln.today

Public exploit code

CVE Published

Feb 07, 2026 - 20:15 nvd

MEDIUM 5.4

DescriptionCVE.org

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.

AnalysisAI

Coco Annotator through version 0.11.1 contains an authorization bypass in the Delete Category Handler endpoint (/api/undo/) that allows authenticated attackers to manipulate category IDs and access or modify unauthorized data. The vulnerability requires valid credentials but can be exploited remotely with public exploit code available. …

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Vulnerability AssessmentAI

Risk Assessment	CVSS 5.4 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker could exploit this flaw, improper authorization.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems running jsbroks COCO Annotator and apply vendor patches as part of regular patch cycle. …

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CVE-2026-2109 vulnerability details – vuln.today

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