CVE-2026-25755Public exploitNetwork attack vector

Document manipulation via unescaped addJS parentheses

Published Feb 19, 2026 · Updated Feb 19, 2026

PDF object injection in Parallax jsPDF before 4.2.0 allows attackers to alter generated documents through untrusted addJS input. The addJS method writes its JavaScript argument inside a parenthesized PDF string without escaping parentheses, so a closing parenthesis can terminate the string and inject additional PDF dictionaries and actions. Exploitation requires attacker-controlled input to reach addJS and a user to open the resulting PDF; the injected action can execute PDF JavaScript or modify document structure.

CVSS severity9.3
Critical
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PDF object injection in Parallax jsPDF before 4.2.0 allows attackers to alter generated documents through untrusted addJS input. The addJS method writes its JavaScript argument inside a parenthesized PDF string without escaping parentheses, so a closing parenthesis can terminate the string and inject additional PDF dictionaries and actions. Exploitation requires attacker-controlled input to reach addJS and a user to open the resulting PDF; the injected action can execute PDF JavaScript or modify document structure.

The record

CVE
CVE-2026-25755
Published
Feb 19, 2026
Updated
Feb 19, 2026
Vendor
Parallax
Product
jsPDF
Classifications
CWE-94, CWE-116, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Parallax · jsPDFversion=< 4.2.0

Published CVSS scores

9.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.6Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-116Improper Encoding or Escaping of Output
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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