Horde IMP up to 6.2.27 E-Mail Message cross site scripting

Summaryinfo

A vulnerability classified as problematic has been found in Horde IMP up to 6.2.27. Affected is an unknown function of the component E-Mail Message Handler. This manipulation causes cross site scripting. This vulnerability is tracked as CVE-2025-30349. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in Horde IMP up to 6.2.27. It has been declared as problematic. Affected by this vulnerability is some unknown processing of the component E-Mail Message Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2025-30349 since 03/21/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are unknown but an exploit is available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 233811 (Debian dla-4113 : php-horde-imp - security update), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (233811) and EUVD (EUVD-2025-7227). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Groupware Software

Vendor

• Horde

Name

• IMP

Version

• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4
• 6.2.5
• 6.2.6
• 6.2.7
• 6.2.8
• 6.2.9
• 6.2.10
• 6.2.11
• 6.2.12
• 6.2.13
• 6.2.14
• 6.2.15
• 6.2.16
• 6.2.17
• 6.2.18
• 6.2.19
• 6.2.20
• 6.2.21
• 6.2.22
• 6.2.23
• 6.2.24
• 6.2.25
• 6.2.26
• 6.2.27

License

• free

Website

• Vendor: https://www.horde.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion