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CVE Record

CVE-2026-25755: jsPDF has PDF Object Injection via Unsanitized Input in addJS Method

jsPDF is a library to generate PDFs in JavaScript. Prior to 4.2.0, user control of the argument of the `addJS` method allows an attacker to inject arbitrary PDF objects into the generated document. By crafting a payload that escapes the JavaScript string delimiter, an attacker can execute malicious actions or alter the document structure, impacting any user who opens the generated PDF. The vulnerability has been fixed in jspdf@4.2.0. As a workaround, escape parentheses in user-provided JavaScript code before passing them to the `addJS` method.

CriticalCVSS 9.6Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

This affects applications that generate PDFs with jsPDF before 4.2.0 and pass user-influenced content into addJS. A malicious input can change the generated PDF so harm occurs when a recipient opens it. The issue is critical because confidentiality, integrity, and availability impacts are all rated high, but user interaction is required.

Executive priority

Treat as urgent for products or workflows generating user-facing PDFs from customer-controlled data. Prioritize upgrade and exposure review before broad redistribution of generated PDFs.

Technical view

The addJS method did not safely encode input embedded in PDF JavaScript strings. Before jsPDF 4.2.0, attacker-controlled arguments could escape string delimiters and inject arbitrary PDF objects, changing document structure or triggering malicious PDF behavior when opened. The published CVSS 3.1 score is 9.6 with network attack vector, low complexity, no privileges, and required user interaction.

Likely exposure

Primary exposure is any application using parallax jsPDF versions below 4.2.0 where addJS receives user-controlled or indirectly user-controlled data.

Exploitation context

The source bundle does not state active exploitation, and KEV is false. Practical abuse depends on controlling addJS input and convincing a user to open the generated PDF.

Researcher notes

Evidence supports a PDF object injection flaw in addJS fixed by commit and release 4.2.0. The bundle identifies CWE-116 and CWE-94. Do not assume broader jsPDF API exposure without local code review.

Mitigation direction

  • Upgrade jspdf to version 4.2.0 or later.
  • If upgrade is blocked, escape parentheses before passing user-provided JavaScript to addJS.
  • Avoid passing untrusted or user-authored content into addJS.
  • Review downstream vendor advisories for packaged jsPDF copies.
  • Regenerate affected PDFs after patching where document trust matters.

Validation and detection

  • Inspect package manifests, lockfiles, and SBOMs for jspdf below 4.2.0.
  • Review PDF-generation paths for addJS calls using request, form, profile, or template data.
  • Confirm deployed builds actually include the patched jsPDF version.
  • Add regression tests for addJS handling of parentheses in user-controlled input.
  • Check whether any distributed PDFs were generated from untrusted inputs before remediation.
Prepared
Confidence
high
Sources
9

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-116: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cwe · medium confidence lookup

CWE-94: Code execution behavior lookup

Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-25755 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.6 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
5Timeline events
2ADP providers
10Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
9.6CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H2.86redhat-SADP
8.1CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N2.85.2GitHub_M

Vulnerability scoring details

Base CVSS 3.1 score

9.6Critical
CVSS 3.1 vector shape for CVE-2026-25755Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. ADP timelineredhat-SADP

    Made public.

  3. CVE publishedCVE Program

    The CVE record was published.

  4. ADP timelineredhat-SADP

    Reported to Red Hat.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
redhat-SADPjsPDF: PDF object injection via unsanitized input in addJS method
other:Red Hat severity ratingcvssV3_1
  • 2026-02-19T15:01:21.761Z: Reported to Red Hat.
  • 2026-02-19T14:41:46.941Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
parallaxjsPDF< 4.2.0Listed
Weakness

CWE details

CWE-116CWE-94

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.