# CVE-2026-18258: Authorization Bypass Through User-Controlled Key in eScriptorium

> Authenticated users can read, modify, or delete other users' transcription content by manipulating primary keys in API requests.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Aug 2026
- **Updated:** 6 Aug 2026
- **Also known as:** GHSA-xg85-j7xm-gqc8

## What is CVE-2026-18258?

CVE-2026-18258 is a high-severity missing authorization vulnerability in Scripta eScriptorium, published on 6 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Authorization bypass in the Line, LineTranscription, VirtualCollection, tag and process API endpoints in Scripta/eScriptorium through 26.04.1 allows a remote authenticated user to read, modify and delete other users' transcription content via primary keys supplied in the request body, which are queried against the global model manager instead of the request-scoped queryset

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-18258?

It affects 1 product.


Products: Escriptorium Escriptorium.

## How do I fix CVE-2026-18258?

No fix has been published for CVE-2026-18258 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-18258 being exploited?

There is no known exploitation of CVE-2026-18258 in the wild and no public exploit code.

## Other vulnerabilities in Scripta eScriptorium

- [CVE-2026-18359](https://insights.sbomify.com/CVE-2026-18359/): Server-Side Request Forgery (SSRF) in eScriptorium (high 8.5)
- [CVE-2026-18277](https://insights.sbomify.com/CVE-2026-18277/): Missing Authorization in eScriptorium (high 7.1)
- [CVE-2026-18275](https://insights.sbomify.com/CVE-2026-18275/): Authorization Bypass Through User-Controlled Key in eScriptorium (medium 6.5)
- [CVE-2026-18276](https://insights.sbomify.com/CVE-2026-18276/): Missing Authorization in eScriptorium (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-18258 and fix it if it is affected.

What it is: CVE-2026-18258 is a high-severity missing authorization vulnerability in Scripta eScriptorium, published on 6 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-18258 in the wild and no public exploit code.

Affected product: Scripta eScriptorium. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-18258/ (Markdown: https://insights.sbomify.com/CVE-2026-18258/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-18258
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-18258
- OSV: https://osv.dev/vulnerability/CVE-2026-18258

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-18258/
Summaries are generated and may contain mistakes; the official description above is the record.