Description
OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, OpenProject's Storages module writes the OneDrive/SharePoint userless OAuth access_token plaintext to Rails.cache under the deterministic key storage.<id>.httpx_access_token, repopulated continuously by an hourly cron and every userless-OAuth call site (see Write cadence). None of the three allowed cache backends (file_store, memcache, redis) encrypts at rest. An attacker with read access to the cache backend recovers the Azure-AD application-tier bearer with an anonymous get over the memcached binary protocol (or the equivalent against Redis). This vulnerability is fixed in 17.3.3 and 17.4.1.
Analysis and contextual insights are available on OpenCVE Cloud.
Remediation
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Advisories
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References
History
Fri, 26 Jun 2026 23:00:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Opf
Opf openproject |
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| Vendors & Products |
Opf
Opf openproject |
Fri, 26 Jun 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, OpenProject's Storages module writes the OneDrive/SharePoint userless OAuth access_token plaintext to Rails.cache under the deterministic key storage.<id>.httpx_access_token, repopulated continuously by an hourly cron and every userless-OAuth call site (see Write cadence). None of the three allowed cache backends (file_store, memcache, redis) encrypts at rest. An attacker with read access to the cache backend recovers the Azure-AD application-tier bearer with an anonymous get over the memcached binary protocol (or the equivalent against Redis). This vulnerability is fixed in 17.3.3 and 17.4.1. | |
| Title | OpenProject: Information Disclosure (cleartext storage of data) on localhost through memcached via Others "storage.<id>.httpx_access_token" leads to Sensitive Data Exposure | |
| Weaknesses | CWE-313 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-26T18:57:58.860Z
Reserved: 2026-06-08T17:13:43.065Z
Link: CVE-2026-52783
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OpenCVE Enrichment
Updated: 2026-06-26T22:45:05Z
Weaknesses