CVE-2023-23924: critical vulnerability in dompdf
URI validation failure on SVG parsing in Dompdf
Published · Updated
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 10epss 3.6%
from disclosure to weapon1 days
Published on NVDJan 31
1st PoC+1d
exploitation probability
3.6%top 11% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
Dompdf is an HTML to PDF converter. The URI validation on dompdf 2.0.1 can be bypassed on SVG parsing by passing `<image>` tags with uppercase letters. This may lead to arbitrary object unserialize on PHP < 8, through the `phar` URL wrapper. An attacker can exploit the vulnerability to call arbitrary URL with arbitrary protocols, if they can provide a SVG file to dompdf. In PHP versions before 8.0.0, it leads to arbitrary unserialize, that will lead to the very least to an arbitrary file deletion and even remote code execution, depending on classes that are available.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H
Affected products
dompdf · dompdfpublic PoCs found — 1
githubgithub.com/motikan2010/CVE-2023-23924★ 9⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — dompdf
In the same product, most dangerous first.
CVE-2023-24813CRITICALURI validation failure on SVG parsing. Bypass of CVE-2023-23924EPSS 2.5%CVE-2023-50262MEDIUMDompdf possible DoS caused by infinite recursion when parsing SVG imagesEPSS 1.5%CVE-2026-59942MEDIUMDompdf: Denial of Service (DoS) via Resource Exhaustion using Oversized Image BitmapsEPSS 0.9%CVE-2026-59941MEDIUMDompdf: Uncontrolled resource consumption based on declared BMP dimensionsEPSS 0.6%CVE-2026-55555LOWDompdf: File existence oracle via font-face stylesheet declarationEPSS 0.5%CVE-2026-55554LOWDompdf: Chroot Validation BypassEPSS 0.5%