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CVE-2026-109322— Grav Guestbook before 0.5.2 Stored XSS via AJAX Pagination and Admin Views

Quick assessment

Affected
getgrav grav-plugin-guestbook
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.

Grav Guestbook 插件在 0.5.2 版本之前存在一个存储型跨站脚本（XSS）漏洞。该漏洞的原因是其 AJAX “加载更多”和“管理加载全部”处理器通过 jQuery 将未转义的 HTML 格式的存储作者名和消息字段直接插入到 DOM 中。未经身份验证的访客可以提交恶意标记，这些标记会在其他访客的浏览器中执行；在 0.5.0 和 0.5.1 版本中，该标记还会在管理员的审核会话中执行。

CVSS 6.1 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
getgrav grav-plugin-guestbook < 0.5.2 affected
0.5.2 unaffected
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I. Basic Information for CVE-2026-109322

Vulnerability Information
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Vulnerability Title
Grav Guestbook before 0.5.2 Stored XSS via AJAX Pagination and Admin Views
Source: CVE Program / CVE List V5
Vulnerability Description
Grav Guestbook plugin before 0.5.2 contains a stored cross-site scripting vulnerability because its AJAX Load more and Admin Load all handlers insert stored author and message fields into the DOM as unescaped HTML via jQuery. Unauthenticated visitors can submit markup that executes in other visitors' browsers and, in versions 0.5.0 and 0.5.1, in administrator moderation sessions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
getgrav grav-plugin-guestbook 0 ~ 0.5.2 -

II. Public POCs for CVE-2026-109322

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III. Intelligence Information for CVE-2026-109322

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Vendor Advisories for CVE-2026-109322 (2)

Same Patch Batch · getgrav · 2026-10-12 · 14 CVEs total

CVE-2026-109321 9.1 CRITICAL Grav Login OAuth Plugin before 1.4.3 Predictable Local Credentials Authentication Bypass
CVE-2026-109313 8.1 HIGH Grav Login Plugin 2.7.0 before 3.9.9 2FA Bypass via Remember-Me Cookie
CVE-2026-109312 8.1 HIGH Grav Login Plugin 2.7.0 before 3.9.9 2FA Bypass via Profile Update Form
CVE-2026-109325 7.5 HIGH Grav from 2.0.22 before 2.1.7 Clockwork Profiler Authentication Bypass via Proxy
CVE-2026-109326 7.5 HIGH Grav before 2.1.7 Information Disclosure via Nested .git Directories
CVE-2026-109314 7.3 HIGH Grav Login Plugin 1.2.0 before 3.9.9 Password Reset Token Disclosure via Reset Page
CVE-2026-109317 7.2 HIGH Grav API Plugin before 1.0.36 Privilege Escalation via Scalar Access Grants
CVE-2026-109315 6.5 MEDIUM Grav 2.0.22 before 2.1.7 Clockwork Debugger Token Disclosure via Twig Sandbox
CVE-2026-109324 6.5 MEDIUM Grav before 2.1.7 Memory Exhaustion via Oversized Image Transforms
CVE-2026-109316 6.5 MEDIUM Grav Data Manager 1.4.0 through 1.4.5 Unauthenticated File Deletion via Admin
CVE-2026-109320 5.4 MEDIUM Grav API Plugin before 1.0.36 Disabled Account Session Access Bypass
CVE-2026-109323 5.3 MEDIUM Grav Star Ratings 2.0.1 through 2.0.3 Missing Server-Side vote_access Authorization
CVE-2026-109319 4.3 MEDIUM Grav Guestbook Plugin 0.5.0 and 0.5.1 Missing Authorization and CSRF in Moderation

IV. Related Vulnerabilities

Same product: grav-plugin-guestbook
Same vendor: getgrav
Same weakness: CWE-79

V. Comments for CVE-2026-109322

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