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Vulnerability record · CVE-2025-30349 · published 21 March 2025

CVE-2025-30349: Cross-site scripting vulnerability

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.

7.2 CVSS 3.1 High EPSS 31% · top 1.8% CWE-79 · Cross-site scripting Deferred
7.2CVSS 3.1 base score
31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

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.

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

References

LinkTags
https://github.com/horde/base/releases/tag/v5.2.23
https://github.com/horde/imp/blob/fd9212ca3b72ff834504af4886f7d95138619bd4/doc/INSTALL.rst?plain=1#L23-L25
https://github.com/horde/imp/blob/fd9212ca3b72ff834504af4886f7d95138619bd4/doc/INSTALL.rst?plain=1#L61-L62
https://github.com/horde/imp/releases/tag/v6.2.27
https://github.com/horde/webmail/releases/tag/v5.2.22
https://github.com/natasaka/CVE-2025-30349/
https://lists.horde.org/archives/imp/Week-of-Mon-20250317/057781.html
https://lists.horde.org/archives/imp/Week-of-Mon-20250317/057784.html
https://web.archive.org/web/20250321152616/https://lists.horde.org/archives/imp/Week-of-Mon-20250317/057781.html
https://web.archive.org/web/20250321162434/https://lists.horde.org/archives/imp/Week-of-Mon-20250317/057784.html
https://www.horde.org/apps/horde
https://www.horde.org/apps/imp
https://www.horde.org/download/horde
https://lists.debian.org/debian-lts-announce/2025/04/msg00008.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-30349), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.