CVE-2022-41957: muhammara vulnerable to Unchecked Return Value to NULL Pointer Dereference

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-11-28 · updated 2026-06-17
Weakness: CWE-690

Description

Muhammara is a node module with c/cpp bindings to modify PDF with JavaScript for node or electron. The package muhammara before 2.6.2 and from 3.0.0 and before 3.3.0, as well as all versions of muhammara's predecessor package hummus, are vulnerable to Denial of Service (DoS) when supplied with a maliciously crafted PDF file to be parsed. The issue has been patched in muhammara version 3.4.0 and the fix has been backported to version 2.6.2. As a workaround, do not process files from untrusted sources. If using hummus, replace the package with muhammara.

Affected products

Hummus Project Hummus: all versions
Muhammara Project Muhammara: before 2.6.2; from 3.0.0 before 3.3.0 — fixed in 2.6.2, 3.3.0

How to fix

Upgrade to a fixed version: Muhammara Project Muhammara 2.6.2, 3.3.0. Check the vendor advisory for mitigations.

References

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