CVE-2026-65755 Overview
CVE-2026-65755 describes a caching flaw in which date-sensitive query cache keys did not retain a bounded time component. Cached query results could remain active across future publication or expiry boundaries. As a result, content that should have become unavailable after a scheduled expiry, or that should not yet be visible before a publication date, could be served from cache. The issue maps to [CWE-524], covering the use of a cache containing sensitive information without appropriate controls. The referenced advisory material is hosted at Regular Labs Security Resources.
Critical Impact
Cached content may be exposed after its intended expiry or before its scheduled publication, breaking time-based access controls.
Affected Products
- Affected product details not published in the NVD entry at time of writing
- Refer to the Regular Labs Security Resources advisory for component and version information
- Environments using date-scoped query caching in the affected component
Discovery Timeline
- 2026-07-23 - CVE-2026-65755 published to NVD
- 2026-07-23 - Last updated in NVD database
Technical Details for CVE-2026-65755
Vulnerability Analysis
The vulnerability arises from how query results are keyed inside a caching layer. Cache keys for date-sensitive queries omitted a bounded time component. Two queries executed on either side of a publication or expiry boundary therefore hash to the same key. The first response is stored and reused after the boundary passes.
Content scheduled to expire continues to be served. Content scheduled to become public may also be served early if a cache entry is populated before the publication time and reused across the boundary. The flaw is a business logic and caching design defect rather than a memory safety or injection issue.
Root Cause
The root cause is missing temporal segmentation in cache key construction. Cache keys did not incorporate a bounded time window aligned with publication or expiry timestamps. Without that component, entries persist across state transitions and no longer reflect the intended visibility of the underlying record.
Attack Vector
An unauthenticated user who requests a cached resource can observe stale data. Exploitation does not require crafted input. Any actor that can trigger or read the cached query at the wrong point in time can retrieve content that should be hidden. See the Regular Labs Security Resources advisory for product-specific request paths and reproduction details.
Detection Methods for CVE-2026-65755
Indicators of Compromise
- Access log entries returning content whose publication timestamp is in the future relative to the request time
- Access log entries returning items whose expiry timestamp has already passed
- Cache hit responses for identifiers that map to expired or unpublished records
Detection Strategies
- Compare content served in HTTP responses against the publication and expiry metadata of the underlying records
- Audit cache key generation logic for date-sensitive queries and confirm a bounded time component is present
- Replay date-scoped queries across scheduled boundaries in a staging environment and check for stale hits
Monitoring Recommendations
- Log cache hit and miss decisions for date-sensitive endpoints and alert on hits that cross expiry timestamps
- Track anomalous availability of records outside their scheduled visibility window
- Retain application and cache layer logs long enough to correlate boundary transitions with client requests
How to Mitigate CVE-2026-65755
Immediate Actions Required
- Apply the vendor update referenced in the Regular Labs Security Resources advisory once available for the affected component
- Reduce time-to-live values on date-sensitive caches until a fix is deployed
- Flush existing cache entries that were generated before applying mitigations
Patch Information
Patch details are published by the vendor at Regular Labs Security Resources. Administrators should upgrade to the fixed release for the affected extension or component and verify that cache key generation now includes a bounded time component tied to publication and expiry boundaries.
Workarounds
- Disable query caching for content that relies on scheduled publication or expiry until the patched version is installed
- Shorten cache lifetimes so that entries cannot persist across expiry or publication boundaries
- Invalidate cache entries programmatically at each publication or expiry event
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
