CVE-2026-25940: parallax jsPDF PDF injection in Acroform module

CVE-2026-25940 · Severity: high · CVSS 8.1 · Published 2026-02-19

jsPDF is a popular JavaScript library used by developers to generate PDF documents within web applications. A security flaw in its form-handling module allows attackers to embed malicious JavaScript code into generated PDFs. If a user opens such a PDF and interacts with certain elements, like hovering over a radio button, the hidden code could execute, potentially leading to data theft or unauthorized actions on the user's behalf.

Technologies: jspdf (npm), Red Hat Advanced Cluster Security for Kubernetes. Vendors: npm, Red Hat.

Quick answers

Is CVE-2026-25940 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-25940 being exploited in the wild.
How severe is CVE-2026-25940?
High severity, with a CVSS score of 8.1, published 19 February 2026.
Which products and versions are affected?
jspdf (npm) SEMVER:introduced=0,fixed=4.2.0; Red Hat Advanced Cluster Security for Kubernetes 4.8, 4.9.
Is there a fix for CVE-2026-25940?
Yes. jspdf (npm): upgrade to 4.2.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-25940 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-25940?
Check whether you run jspdf (npm) or Red Hat Advanced Cluster Security for Kubernetes at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • jspdf (npm): upgrade to 4.2.0 or later
    npm install jspdf@4.2.0

Technical details

A PDF injection vulnerability exists in the Acroform module of jsPDF due to improper encoding or escaping of output (CWE-116). Specifically, the 'appearanceState' property in the AcroformChildClass does not sufficiently sanitize input, allowing an attacker to inject arbitrary PDF objects. When a victim hovers over a radio button option containing this malicious payload, the injected JavaScript actions are executed. This is a remote attack that requires minimal user interaction (hovering) and no prior authentication. The issue is resolved in version 4.2.0; users on older versions should sanitize all input passed to Acroform API members.

Affected products

  • parallax jsPDF < 4.2.0
  • Red Hat Red Hat Advanced Cluster Security for Kubernetes 4.8, 4.9

Identifiers

  • CVE-2026-25940
  • GHSA-p5xg-68wr-hm3m

Timeline

  • 2026-02-19: disclosed
  • 2026-02-19: patched: Fixed in version 4.2.0
  • 2026-02-19: advisory

References

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