# CVE-2026-125107: Muhammara: NULL pointer dereference in LZWDecode filter when DecodeParms omits EarlyChange key

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

Muhammara is a node module with c/cpp bindings to modify PDF with JavaScript for node or electron. Prior to 6.0.5, Muhammara PDFParser::CreateFilterForStream() in src/deps/PDFWriter/PDFParser.cpp dereferences a null PDFInteger pointer when a PDF stream uses the LZWDecode filter with a DecodeParms dictionary that omits the EarlyChange key. An application that processes an untrusted PDF and reads the affected stream can crash, causing a denial of service. This issue is fixed in version 6.0.5.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- julianhille / MuhammaraJS: < 6.0.5 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-476

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/julianhille/MuhammaraJS/security/advisories/GHSA-fhp4-pr5j-46m5 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/julianhille/MuhammaraJS/commit/a98c07780241353334eb65bfca1df025f14be70b (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/julianhille/MuhammaraJS/releases/tag/6.0.5 (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-125107; retrieved 2026-11-09; source updated 2026-11-09

Revision: eae028656d04b9e2bf9151a6e28b05b1a9999e0a3985eacc23c9ccfd7d85252e

Canonical: https://y2.dev/cve/CVE-2026-125107

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