# CVE-2026-5943: Document structural anomalies caused inconsistencies between page element relationships and internal index states…

Source: https://junglewise.ai/threats/cve-2026-5943-document-structural-anomalies-caused-inconsistencies-between-page  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-27  
License: CC BY 4.0 with a link back

CVE-2026-5943 · Severity: high · CVSS 7.8 · Published 2026-04-27

Document structural anomalies caused inconsistencies between page element relationships and internal index states. When scripts triggered document modifications, object reference validity was not properly maintained, leading to a crash when accessing an invalid pointer during page information queries.

Technologies: [Foxit PDF Editor](https://junglewise.ai/threats/technologies/pdf-editor), [Foxit PDF Reader](https://junglewise.ai/threats/technologies/pdf-reader). Vendors: [Foxit](https://junglewise.ai/threats/vendors/foxit).

## Quick answers

**Is CVE-2026-5943 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-5943 being exploited in the wild.

**How severe is CVE-2026-5943?** High severity, with a CVSS score of 7.8, published 27 April 2026.

**Which products and versions are affected?** Foxit PDF Editor, Foxit PDF Reader. The advisory does not name versions.

**Is there a fix for CVE-2026-5943?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-5943?** Check whether you run Foxit PDF Editor or Foxit PDF Reader. 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.

## Affected products

- Foxit PDF Editor
- Foxit PDF Reader

## Related threats

- [Foxit PDF Editor use-after-free in JavaScript annotation handling](https://junglewise.ai/threats/cve-2026-91818-a-use-after-free-vulnerability-exists-in-foxit-pdf-editor-reader)
- [Foxit PDF Editor heap-based out-of-bounds read in JavaScript string handling](https://junglewise.ai/threats/cve-2026-91817-a-heap-based-out-of-bounds-read-vulnerability-exists-in-foxit-pdf)
- [Foxit PDF Editor use-after-free in annotation handling](https://junglewise.ai/threats/cve-2026-91816-a-use-after-free-vulnerability-exists-in-foxit-pdf-editor-reader)
- [Foxit PDF Editor/Reader out-of-bounds write in JPEG2000 decoding](https://junglewise.ai/threats/cve-2026-91815-foxit-pdf-editor-reader-does-not-perform-sufficient-verification)
- [Foxit PDF Editor and Reader signature validation bypass in incremental updates](https://junglewise.ai/threats/cve-2026-91814-a-signature-validation-vulnerability-exists-in-foxit-pdf-editor)