CVE-2026-101004
MediumCVSS 5.3Summary
A security vulnerability was detected in notionnext-org NotionNext up to 4.10.10, affecting the cleanCache function in pages/api/cache.js (Authentication Guard component). Manipulation of the token argument leads to missing authentication. Versions 4.1.0 - 4.9.5.2 allow unauthenticated exploitation due to missing method check; in versions 4.9.5.7 - 4.10.10 a guard exists but is only enforced when CACHE_REVALIDATION_TOKEN is set, so default deployments remain unprotected. The vendor did not respond to the disclosure.
Risk Assessment
A remote attacker can invoke the cache clearing function without authentication, potentially disrupting service availability or performing unauthorized operations. Default deployments are particularly exposed.
Recommendation
Update NotionNext to a version newer than 4.10.10 if a vendor patch is available, and set the CACHE_REVALIDATION_TOKEN variable to enforce the guard. Consider restricting access to the API endpoint.
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Original NVD description (English source)
A security vulnerability has been detected in notionnext-org NotionNext up to 4.10.10. Affected by this issue is the function cleanCache of the file pages/api/cache.js of the component Authentication Guard. The manipulation of the argument token leads to missing authentication. The attack may be initiated remotely. Versions 4.1.0 - 4.9.5.2 allow unauthenticated exploitation due to missing method check. In versions 4.9.5.7 - 4.10.10 a guard present but only enforced when CACHE_REVALIDATION_TOKEN is set. Default deployments remain unprotected. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS