CVE-2025-30349
Horde IMP through 6.2.27, as used with Horde Application Framework through 5.2.23, allows XSS...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2025-30349- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2025-7227
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.
- Record
EUVD-2025-7227- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mchq-vv84-m9gr
Horde IMP through 6.2.27, as used with Horde Application Framework through 5.2.23, allows XSS...
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.
- Record
GHSA-mchq-vv84-m9gr- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-30349- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2025-30349- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVDEBIAN-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 the wild in March 2025.
- Record
DEBIAN-CVE-2025-30349- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVUBUNTU-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 the wild in March 2025.
- Record
UBUNTU-CVE-2025-30349- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
php-horde-impDebian:12 |
All versions, plus listed versions 6.2.27-36.2.27-3.1 |
None known |
php-horde-impDebian:11 |
before 6.2.27-2+deb11u1, plus listed versions 6.2.27-2 |
6.2.27-2+deb11u1 |
php-hordeUbuntu:16.04:LTS |
All versions, plus listed versions 5.2.7+debian0-15.2.8+debian0-15.2.9+debian0-15.2.9+debian0-1build1 |
None known |
php-horde-impUbuntu:16.04:LTS |
All versions, plus listed versions 6.2.10-16.2.11-16.2.12-16.2.12-1ubuntu1 |
None known |
php-hordeUbuntu:18.04:LTS |
All versions, plus listed versions 5.2.16+debian0-15.2.17+debian0-1 |
None known |
php-horde-impUbuntu:18.04:LTS |
All versions, plus listed versions 6.2.20-16.2.21-16.2.21-1ubuntu1 |
None known |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | natasaka/CVE-2025-30349 | 2025-03-27 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-30349 is a high vulnerability (CVSS 7.2) in Horde Imp, published March 21, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 31.3%, the 98th percentile. Fixed in php-horde-imp 6.2.27-2+deb11u1.
References
github.com/horde/webmail/releases/tag/v5.2.22
horde.org/apps/imp
lists.horde.org/archives/imp/Week-of-Mon-20250317/057781.html
web.archive.org/web/20250321152616/https://lists.horde.org/archives/imp/Week-of-Mon-20250317/057781.html
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lists.debian.org/debian-lts-announce/2025/04/msg00008.html
nvd.nist.gov/vuln/detail/CVE-2025-30349
security-tracker.debian.org/tracker/CVE-2025-30349
ubuntu.com/security/CVE-2025-30349
cve.org/CVERecord?id=CVE-2025-30349