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Speed Optimizer

Speed Optimizer provides caching and performance optimization features for WordPress websites.

Speed Optimizer (sg-cachepress) is a WordPress plugin with 2 published CVE records in this archive. The latest tracked vulnerability was published Aug 19, 2026; the highest published CVSS base score is 6.4.

Plugin slug: sg-cachepress

CVE-2026-15421: Speed Optimizer lazy-load image attributes permit Contributor stored XSS

Speed Optimizer through 7.8.0 insufficiently sanitizes and escapes image tag attributes when the administrator has enabled Lazy Load Media. A Contributor can place script-capable content in those attributes; the payload is stored in a page and executes whenever a visitor opens the injected page.

PublishedAug 19, 2026
Safe version guidanceSee mitigation notes
Published vulnerabilities for sg-cachepress
Safe version
Aug 19, 2026 CVE-2026-15421
Speed Optimizer lazy-load image attributes permit Contributor stored XSS
Speed Optimizer through 7.8.0 insufficiently sanitizes and escapes image tag attributes when the administrator has enabled Lazy Load Media. A Contributor can place script-capable content in those attributes; the payload is stored in a page and executes whenever a visitor opens the injected page.
See mitigation notes
CVE6.4
Apr 17, 2024 CVE-2024-32532
Speed Optimizer: A security weakness
Speed Optimizer is affected by a security weakness. Exposure depends on how the affected operation is made reachable by the site. The resulting impact depends on how the affected component exposes the vulnerable operation.
See mitigation notes
CVE5.3