Security readout for executives and security teams
Plain-English summary
Applications using jsPDF before 4.1.0 may create weaponized PDFs when untrusted data reaches certain form-field settings. Injected JavaScript actions can execute when a recipient opens the generated document, potentially exposing data, altering information, or disrupting the viewer. Opening the PDF is required.
Executive priority
Prioritize remediation for internet-facing or externally influenced PDF-generation workflows. Upgrade promptly where recipients routinely open generated PDFs or sensitive data is accessible. Lower urgency may be justified only after confirming the affected APIs are unused or cannot receive untrusted input.
Technical view
CVE-2026-24737 is PDF syntax injection in four AcroForm APIs: ChoiceField.addOption, ChoiceField.setOptions, CheckBox.appearanceState, and RadioButton.appearanceState. Unsanitized attacker-controlled values can introduce arbitrary PDF objects, including JavaScript actions. Versions before 4.1.0 are affected; 4.1.0 contains the fix. CVSS 3.1 is 8.3.
Likely exposure
Exposure requires jsPDF below 4.1.0 and a data flow allowing untrusted input into at least one vulnerable AcroForm member. Risk is greatest for public or unauthenticated PDF-generation services whose documents are opened by customers, employees, or partners. Merely installing jsPDF does not prove exploitability.
Exploitation context
The supplied sources do not establish active exploitation, and the CVE is not identified as KEV. Exploitation nevertheless has low stated complexity and requires a victim to open the generated PDF. Actual behavior may depend on the PDF viewer and its JavaScript security controls.
Researcher notes
The key validation question is whether attacker-controlled strings cross a PDF-object serialization boundary through the named APIs. CWE-116 and CWE-917 are assigned. The source bundle identifies confidentiality and integrity as the largest impacts, but provides no confirmed exploitation evidence or detailed PDF-viewer compatibility findings.
Mitigation direction
- Upgrade jsPDF to version 4.1.0 or later.
- Prevent untrusted input from reaching the four vulnerable AcroForm members until upgraded.
- Regenerate externally distributed PDFs if potentially hostile input may have influenced affected fields.
- Consult downstream vendor advisories when jsPDF is supplied through a packaged product.
Validation and detection
- Confirm deployed and bundled jsPDF versions, including transitive dependencies, are 4.1.0 or later.
- Search application code for all four affected API members.
- Trace each affected value to determine whether users or external systems can control it.
- Verify production artifacts use the remediated dependency, not only updated manifests.
- Inspect representative generated PDFs using safe analysis procedures for unexpected actions or objects.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-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 lookupCWE-917: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCVE-2026-24737 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
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.
SSVC decision data
CVSS vector scores
2 official scoresWe 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L2.85.5redhat-SADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N2.85.2GitHub_MVulnerability scoring details
Base CVSS 3.1 score
8.3HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- ADP timelineredhat-SADP
Made public.
- CVE publishedCVE Program
The CVE record was published.
- ADP timelineredhat-SADP
Reported to Red Hat.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2026-02-03T00:01:51.004Z: Reported to Red Hat.
- 2026-02-02T20:29:05.011Z: Made public.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/parallax/jsPDF/security/advisories/GHSA-pqxr-3g65-p328CVE reference, GitHub_M · x_refsource_CONFIRM
- https://github.com/parallax/jsPDF/commit/da291a5f01b96282545c9391996702cdb8879f79CVE reference, GitHub_M · x_refsource_MISC
- https://github.com/parallax/jsPDF/releases/tag/v4.1.0CVE reference, GitHub_M · x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2026-24737CVE reference, redhat-SADP · vdb-entry, x_refsource_REDHAT
- RHBZ#2436115CVE reference, redhat-SADP · issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24737.jsonCVE reference, redhat-SADP · x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:4466CVE reference, redhat-SADP · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:4467CVE reference, redhat-SADP · vendor-advisory, x_refsource_REDHAT
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Encoding or Escaping of Output
Improper Encoding or Escaping of Output represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.