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LiteSpeed Cache Flaws Expose 7 Million WordPress Sites to Stored XSS

LiteSpeed Cache vulnerabilities enable stored XSS on 7 million WordPress sites

LiteSpeed Cache Flaws Expose 7 Million WordPress Sites to Stored XSS

Do Son October 23, 2026

Three LiteSpeed Cache vulnerabilities, including stored XSS flaws CVE-2026-113499 and CVE-2026-113500, affect 7M+ WordPress sites. Update to 7.9.2.

CVE-2026-18051 (CVSS 10): Unauthenticated Arbitrary File Write Hits 900k W3 Total Cache Sites W3 Total Cache vulnerability CVE-2026-18051 unauthenticated arbitrary file write path traversal on WordPress

W3 Total Cache vulnerability CVE-2026-18051 unauthenticated arbitrary file write path traversal on WordPress

CVE-2026-18051 (CVSS 10): Unauthenticated Arbitrary File Write Hits 900k W3 Total Cache Sites

Do Son August 19, 2026

CVE-2026-18051 (CVSS 10) is an unauthenticated arbitrary file write in W3 Total Cache, exposing 900k+ WordPress sites. Update to 2.10.5.

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