What is the CVSS score of CVE-2026-22033?

CVE-2026-22033 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Label Studio are affected by CVE-2026-22033?

Organizations using Label Studio should be aware of moderate risk from CVE-2026-22033, a cross-site scripting vulnerability rated CVSS 5.4.. A patch is available.

Is there a public PoC exploit available for CVE-2026-22033?

Yes, a public proof-of-concept exploit is available for CVE-2026-22033. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-22033?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Label Studio CVE-2026-22033

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-01-12 security-advisories@github.com

GHSA-2mq9-hm29-8qch

XSS CSRF Label Studio

5.4

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 27, 2026 - 20:39 vuln.today

Public exploit code

Patch released

Jan 27, 2026 - 20:39 nvd

Patch available

CVE Published

Jan 12, 2026 - 18:15 nvd

MEDIUM 5.4

DescriptionGitHub Advisory

Label Studio is a multi-type data labeling and annotation tool. In 1.22.0 and earlier, a persistent stored cross-site scripting (XSS) vulnerability exists in the custom_hotkeys functionality of the application. An authenticated attacker (or one who can trick a user/administrator into updating their custom_hotkeys) can inject JavaScript code that executes in other users’ browsers when those users load any page using the templates/base.html template. Because the application exposes an API token endpoint (/api/current-user/token) to the browser and lacks robust CSRF protection on some API endpoints, the injected script may fetch the victim’s API token or call token reset endpoints - enabling full account takeover and unauthorized API access.

AnalysisAI

Stored XSS in Label Studio's custom_hotkeys feature allows authenticated attackers to inject malicious JavaScript that executes in other users' browsers, potentially enabling API token theft and account takeover due to insufficient CSRF protections. Public exploit code exists for this vulnerability affecting Label Studio 1.22.0 and earlier. An attacker could abuse this to gain unauthorized API access or perform actions on behalf of compromised users.

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects the custom_hotkeys component of Label Studio. Label Studio is a multi-type data labeling and annotation tool. In 1.22.0 and earlier, a persistent stored cross-site scripting (XSS) vulnerability exists in the custom_hotkeys functionality of the application. An authenticated attacker (or one who can trick a user/administrator into updating their custom_hotkeys) can inject JavaScript code that executes in other users’ browsers when those users load any page using the templates/base.html template. Because the application exposes an API token en

RemediationAI

A vendor patch is available — apply it immediately. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.