# CVE-2026-18258: Scripta eScriptorium authorization bypass in API endpoints

Source: https://junglewise.ai/threats/cve-2026-18258-scripta-escriptorium-authorization-bypass-in-api-endpoints  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-06. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-18258 · Severity: high · CVSS 8.8 · Published 2026-08-06

eScriptorium is a web application for transcribing and analyzing historical documents and manuscripts. A flaw in several API endpoints allows authenticated users to access, modify, and delete other users' transcription work by exploiting how the application retrieves data, potentially exposing sensitive research content and disrupting collaborative projects.

Technologies: [Escriptorium](https://junglewise.ai/threats/technologies/escriptorium). Vendors: [Escriptorium](https://junglewise.ai/threats/vendors/escriptorium).

## Quick answers

**Is CVE-2026-18258 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18258 being exploited in the wild.

**How severe is CVE-2026-18258?** High severity, with a CVSS score of 8.8, published 6 August 2026.

**Which products and versions are affected?** Scripta eScriptorium through 26.04.1.

**Is there a fix for CVE-2026-18258?** 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.

**How is CVE-2026-18258 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-18258?** Check whether you run Escriptorium. 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.

## Technical details

An authorization bypass vulnerability exists in the Line, LineTranscription, VirtualCollection, tag, and process API endpoints. The root cause is that the application queries against a global model manager instead of enforcing request-scoped querysets, allowing authenticated attackers to specify arbitrary primary keys in request bodies to access records outside their authorization scope. The vulnerability requires network access and valid authentication credentials. An attacker can read, modify, and delete transcription content belonging to other users. The issue affects eScriptorium through version 26.04.1.

## Affected products

- Scripta eScriptorium through 26.04.1

## Timeline

- 2026-08-06: disclosed

## References

- [https://gitlab.com/scripta/escriptorium/-/work_items/1226](https://gitlab.com/scripta/escriptorium/-/work_items/1226)

## Related threats

- [Scripta eScriptorium server-side request forgery in document import](https://junglewise.ai/threats/cve-2026-18359-scripta-escriptorium-server-side-request-forgery-in-document)
- [Scripta eScriptorium missing authorization in OCR model access control](https://junglewise.ai/threats/cve-2026-18277-scripta-escriptorium-missing-authorization-in-ocr-model-access)
- [Scripta eScriptorium missing authorization in websocket consumer](https://junglewise.ai/threats/cve-2026-18276-scripta-escriptorium-missing-authorization-in-websocket-consumer)
- [Scripta eScriptorium authorization bypass in taxonomy serializers](https://junglewise.ai/threats/cve-2026-18275-scripta-escriptorium-authorization-bypass-in-taxonomy-serializers)