CVE-2021-3838
moderate-risk
Published 2024-11-15
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 phar:// protocol to unserialize the uploaded file and instantiate arbitrary PHP objects. This can lead to remote code execution, especially when DOMPdf is used with frameworks with documented POP chains like Laravel or vulnerable developer code.
Do I need to act?
~
4.9% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: 79573d8b8a141ec8a17312515de8740eed014fa9, 99aeec1efec9213e87098d42eb09439e7ee0bb6a
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
45
/ 100
moderate-risk
Severity
32/34 · Critical
Exploitability
8/34 · Low
Exposure
5/34 · Minimal