漏洞描述
The Seraphinite Accelerator plugin for WordPress up to and including 2.29.18 was vulnerable to reflected cross-site scripting through the seraph_accel_prep parameter. CacheExtractPreparePageParams() compared the expected HMAC against the JSON-decoded nonce with PHP's loose != operator, so a JSON boolean true satisfied the comparison and bypassed the signature check, and _CbContentFinishSkip() then concatenated the attacker-controlled selfTest field straight into the response body, letting unauthenticated attackers inject arbitrary scripts.
影响产品
暂无结构化产品信息。
修复建议
建议关注厂商安全公告，及时升级至已修复版本，并结合实际资产暴露情况采取缓解措施。
参考链接
www.wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/wordpress-plugins/seraphinite-accelerator/seraphinite-accelerator-22918-reflected-cross-site-scripting↗plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/seraphinite-accelerator/trunk/common.php↗nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-17532↗