DEBIAN-CVE-2026-58451
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.
DEBIAN-CVE-2026-58451
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-58451
php-horde-imp
Source reference: /affected/0/package/name
- Affected versions
- 6.2.27-3
Source reference:
/affected/0/versions6.2.27-3.1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "php-horde-imp",
"purl": "pkg:deb/debian/php-horde-imp?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"6.2.27-3",
"6.2.27-3.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58451.json"
},
"ecosystem_specific": {
"urgency": "end-of-life"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58006 · Revision 1
- Added to Heist Feed
- Publisher date