Deserialization in Dompdf Dompdf/dompdf
CVE-2021-3838
DomPDF before version 2.0.0 is vulnerable to PHAR deserialization due to a lack of checking on the protocol before passing it into the file_get_contents() function. An attacker who can upload files of any type to the server can pass in the…
Vulnerability class: Insecure Deserialization
EPSS: 0.014 (69.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Dompdf Dompdf/dompdf — versions unspecified
- Dompdf_project Dompdf
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@huntr.dev (Exploit, Patch, Third Party Advisory, Issue Tracking)
- security@huntr.dev (Patch)
Frequently asked questions
- What is CVE-2021-3838?
- CVE-2021-3838 is a critical-severity vulnerability in Dompdf Dompdf/dompdf, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2024-11-15.
- How severe is CVE-2021-3838?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-3838 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.