jsbroks COCO Annotator Data Endpoint datasets.py path traversal

published 2026-05-03 6 mo ago modified 2026-10-26 13 d ago also EUVD-2026-26816

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits: 0; none known

A weakness has been identified in jsbroks COCO Annotator up to 0.11.1. Affected is an unknown function of the file backend/webserver/api/datasets.py of the component Data Endpoint. Executing a manipulation of the argument folder can lead to path traversal. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 6 mo ago (2026-05-04)

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/heylaika/vuln-research-program/blob/main/2026/CVE-2026-7680%20-%20COCO%20Annotator%20-%20Path%20Traversal%20via%20Dataset%20Folder%20Parameter/README.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
CNA	3.0	4.3	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
CNA	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR
CNA	4.0	2.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CNA	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

jsbroks COCO Annotator

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

github.com /heylaika/vuln-research-program/blob/main/2026/CVE-2026-7680%20-%20COCO%20Annotator%20-%20Path%20Traversal%20v
exploit
vuldb.com /vuln/360833
vdb-entry, technical-description
vuldb.com /vuln/360833/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-7680
third-party-advisory
vuldb.com /submit/801150
third-party-advisory

Sources

CVE List CVE-2026-7680
NVD CVE-2026-7680

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary