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CVE-2021-3902

Date: November 15, 2024

Improper restriction of external entities (XXE) in DomPDF's SVG parser allows it to perform an SSRF even if isRemoteEnabled set to false or even cause a deserialization attack in the SVG parser this time. The issue is patched in version 2.0.0.

Language: PHP

Severity Score

Related Resources (7)

https://nvd.nist.gov/vuln/detail/CVE-2021-3902
https://github.com/dompdf/dompdf
https://github.com/dompdf/dompdf/commit/f56bc8e40be6c0ae0825e6c7396f4db80620b799
https://security-tracker.debian.org/tracker/CVE-2021-3902
https://huntr.dev/bounties/a6071c07-806f-429a-8656-a4742e4191b1/
https://huntr.com/bounties/a6071c07-806f-429a-8656-a4742e4191b1
https://www.mend.io/vulnerability-database/CVE-2021-3902

Severity Score

Weakness Type (CWE)

Improper Restriction of XML External Entity Reference

CWE-611

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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