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CVE-2026-52783

OpenProject: Information Disclosure (cleartext storage of data) on localhost through memcached via Others "storage.<id>.httpx_access_token" leads to Sensitive Data Exposure

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 17.3.3, 17.4.1
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • opf openproject

    fixed in 17.3.3; From 17.4.0 · fixed in 17.4.1

References 1

GitHub · opf/openproject