DEBIAN-CVE-2026-59941
Dompdf is an HTML to PDF converter for PHP. Versions 3.15 and prior accept a BMP image and generates a PDF-compatible PNG based only on its declared header dimensions and never bounds width × height before the image is converted through GD. A 58-byte BMP whose header declares e.g. 6000×6000 is accepted and later drives imagecreatetruecolor($width, $height) (and PHP's native BMP decoder) to allocate the full pixel canvas. A payload can fit in a single HTTP request: the BMP can be inlined as a data:image/bmp;base64,… URI inside attacker-controlled HTML, so no upload, no remote fetch, and no chroot-reachable file is required. I measured a 169-byte request driving a dompdf render to ~412 MB peak RSS and ~4.8 s of CPU/wall time, versus ~34 MB for an identically-sized benign request — roughly a 12× memory amplification per request, repeatable and unauthenticated. This issue has been fixed in version 3.16.
DEBIAN-CVE-2026-59941
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-2026-59941
php-dompdf
Source reference: /affected/0/package/name
- Affected versions
- 2.0.3+dfsg-1
Source reference:
/affected/0/versions2.0.3+dfsg-1+deb12u1Source reference:
/affected/0/versions2.0.3+dfsg-2Source reference:
/affected/0/versions2.0.3+dfsg-3Source reference:
/affected/0/versions2.0.3+dfsg-4Source reference:
/affected/0/versions2.0.4+dfsg-1Source reference:
/affected/0/versions2.0.4+dfsg-2Source reference:
/affected/0/versions2.0.7+dfsg-1Source reference:
/affected/0/versions3.0.0+dfsg-1Source reference:
/affected/0/versions3.0.0+dfsg-2Source reference:
/affected/0/versions3.0.1+dfsg-1Source reference:
/affected/0/versions3.0.2+dfsg-1Source reference:
/affected/0/versions3.1.0+dfsg-1Source reference:
/affected/0/versions3.1.4+dfsg-1Source reference:
/affected/0/versions3.1.4+dfsg-2Source 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-dompdf",
"purl": "pkg:deb/debian/php-dompdf?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.0.3+dfsg-1",
"2.0.3+dfsg-1+deb12u1",
"2.0.3+dfsg-2",
"2.0.3+dfsg-3",
"2.0.3+dfsg-4",
"2.0.4+dfsg-1",
"2.0.4+dfsg-2",
"2.0.7+dfsg-1",
"3.0.0+dfsg-1",
"3.0.0+dfsg-2",
"3.0.1+dfsg-1",
"3.0.2+dfsg-1",
"3.1.0+dfsg-1",
"3.1.4+dfsg-1",
"3.1.4+dfsg-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59941.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58044 · Revision 1
- Added to Heist Feed
- Publisher date