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CVE-2026-109319— Grav Guestbook Plugin 0.5.0 and 0.5.1 Missing Authorization and CSRF in Moderation

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 插件版本 0.5.0 和 0.5.1 在管理员审核操作（包括删除、通过单个条目、通过全部条目）中存在缺少授权验证和跨站请求伪造（CSRF）漏洞。缺乏 权限的已认证管理员用户，或通过利用无 nonce 保护的 GET 请求劫持审核员会话的外部网站，可以删除或审核 Guestbook 中的条目。

CVSS 4.3 · Medium EPSS 0.20% · P9

Affected Version Matrix 2

VendorProduct Version RangeStatus
getgrav grav-plugin-guestbook 0.5.0< 0.5.2 affected
0.5.2 unaffected
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I. Basic Information for CVE-2026-109319

Vulnerability Information
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Vulnerability Title
Grav Guestbook Plugin 0.5.0 and 0.5.1 Missing Authorization and CSRF in Moderation
Source: CVE Program / CVE List V5
Vulnerability Description
Grav Guestbook plugin 0.5.0 and 0.5.1 contains missing authorization and cross-site request forgery vulnerabilities in Admin moderation actions delete, approve, and approveAll. Authenticated Admin users lacking the admin.guestbook permission, or external sites abusing a moderator's session via nonce-less GET requests, can delete or approve Guestbook entries.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
getgrav grav-plugin-guestbook 0.5.0 ~ 0.5.2 -

II. Public POCs for CVE-2026-109319

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III. Intelligence Information for CVE-2026-109319

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Vendor Advisories for CVE-2026-109319 (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-2026-109322 6.1 MEDIUM Grav Guestbook before 0.5.2 Stored XSS via AJAX Pagination and Admin Views
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

IV. Related Vulnerabilities

Same product: grav-plugin-guestbook
Same vendor: getgrav
Same weakness: CWE-862

V. Comments for CVE-2026-109319

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