# CVE-2026-55842: Scoold: CORS wildcard origin with credentials enabled allows cross-origin authenticated API access from any domain

> Attackers can perform authenticated actions and read data on behalf of logged-in users via cross-origin requests due to insecure CORS configuration.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Oct 2026
- **Updated:** 16 Oct 2026
- **Also known as:** GHSA-q684-4jqv-c63c

## What is CVE-2026-55842?

CVE-2026-55842 is a medium-severity vulnerability in Erudika scoold, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Scoold is a Q&A and a knowledge sharing platform for teams. Prior to 1.69.1, the apiCorsConfiguration() method in src/main/java/com/erudika/scoold/ScooldServer.java combines addAllowedOriginPattern("*") with setAllowCredentials(true), causing Spring to reflect any requesting origin while allowing cookies or session tokens. A malicious website visited by a logged-in Scoold user can therefore issue authenticated API requests, read user data, questions, and configuration, and trigger state-changing operations on the user's behalf. This issue is fixed in version 1.69.1.

Weakness: CWE-942 (Permissive Cross-domain Security Policy with Untrusted Domains), CWE-346 (Origin Validation Error)

## Which versions are affected by CVE-2026-55842?


## How do I fix CVE-2026-55842?

No fix has been published for CVE-2026-55842 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-55842 being exploited?

There is no known exploitation of CVE-2026-55842 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-55842 and fix it if it is affected.

What it is: CVE-2026-55842 is a medium-severity vulnerability in Erudika scoold, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-55842 in the wild and no public exploit code.

Affected product: Erudika scoold. 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-2026-55842/ (Markdown: https://insights.sbomify.com/CVE-2026-55842/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-55842
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-55842
- OSV: https://osv.dev/vulnerability/CVE-2026-55842

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-55842/
Summaries are generated and may contain mistakes; the official description above is the record.