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 text/html e-mail message with an onerror attribute (that may use base64-encoded JavaScript code), as exploited in…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 31.3%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 31.29% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- cve@mitre.org
EPSS 31.3% since 2 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.