AI security incident: AVideo has Stored Cross-Site Scripting via Markdown Comment Injection (GHSA-rcqw-6466...
Vulnerability Type Stored Cross-Site Scripting (XSS) — CWE-79. ## Affected Product/Versions AVideo 18.0. ## Root Cause Summary AVideo allows Markdown in video comments and uses Parsedown (v1.7.4) without Safe Mode enabled. Markdown links are not sufficiently sanitized, allowing javascript: URIs to be rendered as clickable links. ## Impact Summary An authenticated low-privilege attacker can post a malicious comment that injects persistent JavaScript. When another user clicks the link, the attacker can perform actions such as session hijacking, privilege escalation (including admin takeover), and data exfiltration. ## Resolution/Fix The issue was confirmed and fixed in the master branch. An official release will be published soon.
Why This Is AI-Related
This advisory is part of the public incident archive, but the current source material uses limited explicit AI terminology, so the cited sources should be reviewed carefully when judging AI relevance and exposure.
- Explicit AI-specific signals are limited in the current source material, so use the cited advisory to validate scope during triage.
Affected Workflow
Review connectors, retrieval plugins, webhook targets, file access paths, and outbound network policies around AI services.
Likely Attack Path
The flaw creates an unauthorized path to fetch, read, or exfiltrate sensitive data from connected systems or local files.
Impact
The flaw can expose internal data, local files, or connected systems through AI workflow connectors and supporting services. Severity HIGH. Classification confidence 45%. Source channel GHSA.
Detection And Triage Signals
- Unexpected outbound requests from AI application components
- Access to internal metadata endpoints, local files, or restricted datasets
- Downloads or responses that contain internal documents, secrets, or embeddings
Recommended Response
- Confirm whether the affected component can reach internal metadata, local files, or connected data stores.
- Restrict outbound requests and sensitive data access paths until a patch or mitigation is in place.
- Inspect logs for unusual downloads, webhook calls, retrieval requests, or responses containing internal content.
Compliance And Business Impact
Data exposure creates direct confidentiality risk and can trigger incident notification, contractual, and regulatory obligations.
Sources
Want alerts like this in real time?
Get notified with incident context, likely impact, and response guidance.
Get Notified