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CVE-2026-52783

HIGH
8.2
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-52783
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-08 17:13 UTC
Published
2026-06-26 18:57 UTC
Last updated
2026-06-26 18:57 UTC
Primary CWE
CWE-313
CWE-313: Cleartext Storage in a File or on Disk
Vendor / Product
opf / openproject
Sources
cve.org  ·  NVD

Severity & Metrics

8.2 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Affected products (1)
VendorProductPlatformVersions
opf openproject — < 17.3.3, >= 17.4.0, < 17.4.1
Weakness (CWE)
CWESourceDescription
CWE-313 cna CWE-313: Cleartext Storage in a File or on Disk
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.2 HIGH 3.1 cna CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
References (1)
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