CVE-2026-73220 cvat-ai CVE debrief

Who should care

Defenders responsible for CVAT deployments, especially those using versions between 2.68.0 and 2.70.0, should assess exposure and prioritize remediation. This includes reviewing user privileges, access controls, and implementing compensating controls. Security teams and vulnerability management teams should also review the vulnerability and its potential impact on their systems.

Why it matters

This vulnerability allows an attacker to store malicious JavaScript in an annotation guide, potentially leading to arbitrary CVAT requests with the victim user's privileges. Defenders should prioritize verifying exposure, assessing impact, and remediating vulnerable CVAT deployments.

• Potential for arbitrary CVAT requests with victim user's privileges.
• Possible execution of malicious JavaScript when opening annotation guides.
• Need for verification of CVAT version and user privileges.
• Importance of upgrading to CVAT version 2.70.0 or later.

Technical summary

The audio-task annotation guide renderer in CVAT passes attacker-controlled guide Markdown to MDEditor without the rehype-sanitize plugin, allowing for malicious JavaScript execution. This allows an attacker to store malicious JavaScript in an annotation guide, potentially leading to arbitrary CVAT requests with the victim user's privileges. The vulnerability exists in CVAT versions from 2.68.0 until 2.70.0. Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems.

Defensive priority

Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems, especially if they use CVAT versions between 2.68.0 and 2.70.0.

Recommended defensive actions

• Verify CVAT version and check if it falls within the vulnerable range (2.68.0 to 2.70.0).
• Assess user privileges and access controls for annotation guide creation and editing.
• Implement compensating controls, such as monitoring for suspicious activity or restricting user privileges.
• Upgrade to CVAT version 2.70.0 or later.
• Review relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The vulnerability is fixed in version 2.70.0. Users who can create or edit annotation guides can store malicious JavaScript that executes when another user opens the guide. The audio-task annotation guide renderer in CVAT passes attacker-controlled guide Markdown to MDEditor without the rehype-sanitize plugin, allowing for malicious JavaScript execution. This issue allows an attacker to store malicious JavaScript in an annotation guide, potentially leading to arbitrary CVAT requests with the victim user's privileges.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.