PDF object injection in jsPDF addJS (CVE-2026-25755)
jsPDF (prior to 4.2.0) is vulnerable to PDF object injection via the addJS method. The addJS implementation concatenates user-controlled input directly into a PDF /JS string (e.g., this.internal.out("/JS (" + text + ")")) without properly escaping PDF string delimiters (notably the closing parenthesis). An attacker who can control the addJS argument can craft input that terminates the intended /JS literal and injects arbitrary PDF objects/structures (e.g., actions such as /OpenAction or other object graph modifications) into the generated document, affecting users who open the produced PDF.
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Impact, mitigation & remediation
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Impact
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Mitigation
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Remediation
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Exploits
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown (listed as a trending CVE affecting jsPDF).
Unknown (listed as a trending CVE affecting jsPDF; no technical details provided in the content).
A high-severity PDF Object Injection vulnerability in the jsPDF library’s addJS method caused by improper sanitization/escaping of user-supplied input, enabling attackers to break out of the intended /JS string and inject arbitrary PDF objects/actions (e.g., OpenAction) into generated PDFs.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.