Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-15425— Yoast SEO <= 28.0 - Authenticated (Author+) Stored Cross-Site Scripting via Post Slug (post_name)

Quick assessment

Affected
yoast Yoast SEO – Advanced SEO with real-time guidance and built-in AI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Yoast SEO是美国Yoast公司的一款网站搜索引擎优化工具。 Yoast SEO 28.0及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，可能导致经过身份验证的攻击者通过Post Slug注入任意Web脚本，造成存储型跨站脚本攻击。

CVSS 6.4 · Medium EPSS 0.35% · P27

Affected Version Matrix 1

VendorProduct Version RangeStatus
yoast Yoast SEO – Advanced SEO with real-time guidance and built-in AI ≤ 28.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-15425

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Yoast SEO <= 28.0 - Authenticated (Author+) Stored Cross-Site Scripting via Post Slug (post_name)
Source: CVE Program / CVE List V5
Vulnerability Description
The Yoast SEO – Advanced SEO with real-time guidance and built-in AI plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Post Slug (post_name) in all versions up to, and including, 28.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires pretty permalinks to be enabled, as the exploit chain depends on get_permalink() embedding the stored percent-encoded post_name in the generated URL.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Yoast SEO 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Yoast SEO是美国Yoast公司的一款网站搜索引擎优化工具。 Yoast SEO 28.0及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，可能导致经过身份验证的攻击者通过Post Slug注入任意Web脚本，造成存储型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
yoast Yoast SEO – Advanced SEO with real-time guidance and built-in AI 0 ~ 28.0 -

II. Public POCs for CVE-2026-15425

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-15425

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-15425 (1)

IV. Related Vulnerabilities

Same product: Yoast SEO – Advanced SEO with real-time guidance and built-in AI
Same vendor: yoast
Same weakness: CWE-79

V. Comments for CVE-2026-15425

No comments yet

Leave a comment