CVE-2026-121561
Label Studio before 1.23.2 SSRF and Token Disclosure via Image Export Downloads
No exploitation reported by the sources we read.
- Published2026-11-03
- WeaknessCWE-918
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.
Timeline
dates in UTC- 2026-11-0315:17CVE publishedCNA
Versions per branch
Products declared by the CNA
As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.
- HumanSignal label-studioother versions: not affected
https://github.com/HumanSignal/label-studio
Affected- < 1.23.2fixed in 1.23.2semver
- HumanSignal label-studio-sdkother versions: not affected
https://github.com/HumanSignal/label-studio-sdk
Affected- < 2.1.2fixed in 2.1.2semver
Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-03
Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-121561 yet.
Fix
No fix published by the sources we read yet. NVD record
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Metasploit modules
- none listed Metasploit Framework
Sources
- CNACVSS 4.06.32026-11-03
- CNACVSS 3.17.72026-11-03
- NVDCVSS 3.17.7read 2026-11-04
- CNAweakness (CWE)CWE-9182026-11-03
- NVDweakness (CWE)CWE-918read 2026-11-04
- FIRST EPSSEPSS score0.4 %2026-11-04
- GitHub Advisoriesadvisory—
Identifiers
- EUVD-2026-115906same flawENISA EUVD · LicenseRef-ENISA-legal-notice
- GHSA-m949-r65c-x2m9same flawGitHub Advisory Database · CC-BY-4.0
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- CVSS 4.0 vector
- 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
- Published
- 2026-11-03
- Last Modified
- 2026-11-03
- NVD status
- Awaiting Analysis
- GitHub Advisory
- GHSA-m949-r65c-x2m9
Frequently asked questions
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Is CVE-2026-121561 actively exploited?
What is the CVSS score for CVE-2026-121561?
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Sources for this record
- CVE Program · CVE Program Terms of Use
- ENISA EU Vulnerability Database · ENISA legal notice §1.2 (reproduction authorised, provided the source is acknowledged)
- FIRST EPSS · EPSS terms of use (free use, attribution requested)
- GitHub Advisory Database · CC-BY-4.0 · GHSA-m949-r65c-x2m9
- NVD · Public domain (17 U.S.C. § 105) for NVD-authored data; third-party content under its own terms
- OpenCVE · OpenCVE terms of service · terms restrict redistribution