CVE-2023-33960

OpenProject vulnerable to project identifier information leakage through robots.txt

HIGH
7.5
CVSS Score
Published: June 1, 2023 at 04:20 PM UTC
Updated: June 17, 2026 at 06:02 AM UTC
2 products affected across 2 vendorsOpenprojectOpenproject

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Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 12.5.6
Affected range stops below 12.5.6, so it looks safe — our inference, not a vendor statement
v < 12.5.6
Affected range stops below 12.5.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200CWE-319

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