UBUNTU-CVE-2026-58451

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Source
https://ubuntu.com/security/CVE-2026-58451
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-58451.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-58451
Upstream
Published
2026-07-01T19:16:00Z
Modified
2026-07-09T15:21:05Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Horde IMP before 7.0.1 contains a path traversal vulnerability in lib/Compose.php that allows authenticated attackers to read arbitrary files from the server filesystem by embedding traversal sequences after a CKEditor path prefix in img src URLs. Attackers can bypass the stripos() prefix validation by appending sequences such as traversal segments after the matching prefix, causing file_get_contents() to read sensitive files whose contents are then exfiltrated as MIME parts in outgoing email; unauthenticated exploitation is also achievable via CSRF against an active authenticated session.

References

Affected packages

Ubuntu:16.04:LTS / php-horde-imp

Package

Name
php-horde-imp
Purl
pkg:deb/ubuntu/php-horde-imp?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.2.10-1
6.2.11-1
6.2.12-1
6.2.12-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-horde-imp",
            "binary_version": "6.2.12-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-58451.json"

Ubuntu:18.04:LTS / php-horde-imp

Package

Name
php-horde-imp
Purl
pkg:deb/ubuntu/php-horde-imp?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.2.20-1
6.2.21-1
6.2.21-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-horde-imp",
            "binary_version": "6.2.21-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-58451.json"