CVE-2026-121561

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 63/100
Published: 2026-11-03 Modified: 2026-11-11 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: X
AT: None
VC: Low
VI: None
VA: None

Description

Label Studio before 1.23.2 (label-studio-sdk before 2.1.2) contains a server-side request forgery vulnerability that allows authenticated users to read internal URLs through image-bearing export formats. Attackers can import tasks with data.image pointing at internal services, export as YOLO or COCO with images to read responses, and spoof Host to capture the organization owner's API token.

Affected Software (4)

VendorProductVersion
HumanSignal label-studio 0 < 1.23.2
HumanSignal label-studio 0 < 1.23.2
HumanSignal label-studio-sdk 0 < 2.1.2
HumanSignal label-studio-sdk 0 < 2.1.2

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

6.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/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

0.43%
Raw Score 0.004320
Percentile 38.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00432
2026-11-12
0.00432
2026-11-10
0.00432
2026-11-09
0.00432
2026-11-08
0.00432
2026-11-07
0.00432
2026-11-06
0.00432
2026-11-05
0.00432
2026-11-04
0.00432

Intelligence Sources

mitre ref →
nvd ref →