CVE catalog

CVE-2026-59941

Dompdf is an HTML to PDF converter for PHP. Versions…

[CVE catalog]

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.

Severity
Medium · CVSS 6.3
Published
Source
[NVD] · [CVE record]
EPSS
0.64% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence
Original provider fields
{
  "package_releases": [
    {
      "name": "php-dompdf",
      "status": "vulnerable",
      "release": "sid",
      "version": "3.1.4+dfsg-2"
    },
    {
      "name": "php-dompdf",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "2.0.3+dfsg-1+deb12u1"
    }
  ],
  "fixed_versions": [
    {
      "bug": 1142987,
      "name": "php-dompdf",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": 1142987,
      "name": "php-dompdf",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "dompdf/dompdf",
      "ecosystem": "composer",
      "fixed_version": "3.1.6"
    },
    {
      "name": "php-dompdf",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "0.6.2+dfsg-3",
        "0.6.2+dfsg-3ubuntu0.18.04.1~esm1"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2026-59941"
    },
    {
      "name": "php-dompdf",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "20.04",
      "versions": [
        "0.6.2+dfsg-3",
        "0.6.2+dfsg-3ubuntu0.20.04.1"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2026-59941"
    },
    {
      "name": "php-dompdf",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "22.04",
      "versions": [
        "0.6.2+dfsg-3.1",
        "0.6.2+dfsg-3.1ubuntu0.1"
      ],
      "ecosystem": "deb",
      "fixed_version": "",
      "provider_record_id": "UBUNTU-CVE-2026-59941"
    }
  ]
}

[Debian bug #1142987]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [php-dompdf]Unknown
    Details (2)

    • 2.0.3+dfsg-1+deb12u1 · all · bookworm

      Affected

      nvd · php-dompdf · debian · bookworm; nvd · php-dompdf · debian · 12

    • 2.0.3+dfsg-1+deb12u1 · all · bookworm

      Affected

      nvd · php-dompdf · debian · bookworm; nvd · php-dompdf · debian · 12

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]