Unauthenticated cache poisoning via unkeyed tracking parameters
Published Sep 1, 2026 · Updated Sep 1, 2026
Cache poisoning in Emre Vona WP Fastest Cache before 1.5.1 allows remote attackers to alter pages served to later visitors. The page-cache key omits tracking-related query parameters even though responses to requests containing them are stored under the clean URL's cache entry. No authentication or user interaction is required, and the poisoned response can affect every subsequent visitor to that URL.
Summary
What happened
Cache poisoning in Emre Vona WP Fastest Cache before 1.5.1 allows remote attackers to alter pages served to later visitors. The page-cache key omits tracking-related query parameters even though responses to requests containing them are stored under the clean URL's cache entry. No authentication or user interaction is required, and the poisoned response can affect every subsequent visitor to that URL.
The record
- CVE
- CVE-2026-74916
- Published
- Sep 1, 2026
- Updated
- Sep 1, 2026
- Vendor
- Emre Vona
- Product
- WP Fastest Cache
- Classifications
- CWE-349, CAPEC-141, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 1, 2026CVE publishedPublication date reported by the CVE source.
- Sep 1, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.8.7.7 <1.5.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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