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CVE-2026-62671— CSRF in grav-plugin-login: anonymous attacker rotates a logged-in user's 2FA (TOTP) secret (no nonce on task=login.regenerate2FASecret)

Quick assessment

Affected
getgrav grav-plugin-login
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 Login Plugin是Grav组织的一款内容管理系统登录插件。 Grav Login Plugin 3.8.11之前版本存在跨站请求伪造漏洞，该漏洞源于login.regenerate2FASecret任务接受顶级GET请求时未进行登录表单nonce、Origin和Referer检查，可能导致跨站请求伪造攻击，覆盖受害者TOTP密钥并强制双重认证重新注册。

CVSS 5.4 · Medium EPSS 0.14% · P3

Affected Version Matrix 1

VendorProduct Version RangeStatus
getgrav grav-plugin-login < 3.8.11 affected
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I. Basic Information for CVE-2026-62671

Vulnerability Information
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Vulnerability Title
CSRF in grav-plugin-login: anonymous attacker rotates a logged-in user's 2FA (TOTP) secret (no nonce on task=login.regenerate2FASecret)
Source: CVE Program / CVE List V5
Vulnerability Description
Grav Login Plugin adds login, basic ACL, and session wide messages to Grav. Prior to 3.8.11, the Grav Login plugin login.regenerate2FASecret task accepts a top-level GET request through the TaskServiceProvider task: URI parameter without requiring a login-form nonce, an Origin check, or a Referer check. Under the default SameSite=Lax session cookie policy, an off-site navigation can invoke taskRegenerate2FASecret() in a logged-in victim's session, overwrite the victim's TOTP secret, and force two-factor re-enrollment. This issue is fixed in version 3.8.11.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Grav Login Plugin 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grav Login Plugin是Grav组织的一款内容管理系统登录插件。 Grav Login Plugin 3.8.11之前版本存在跨站请求伪造漏洞，该漏洞源于login.regenerate2FASecret任务接受顶级GET请求时未进行登录表单nonce、Origin和Referer检查，可能导致跨站请求伪造攻击，覆盖受害者TOTP密钥并强制双重认证重新注册。
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
getgrav grav-plugin-login < 3.8.11 -

II. Public POCs for CVE-2026-62671

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III. Intelligence Information for CVE-2026-62671

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Patches & Fixes for CVE-2026-62671 (1)

Vendor Advisories for CVE-2026-62671 (1)

Vendor Pages for CVE-2026-62671 (1)

Same Patch Batch · getgrav · 2026-08-19 · 17 CVEs total

CVE-2026-62668 9.4 CRITICAL Grav API Plugin: Webhook SSRF via Unrestricted cURL Protocols
CVE-2026-62666 8.8 HIGH Grav API Plugin: non-super api.users.write manager -> super-admin via createApiKey (incomp
CVE-2026-64850 8.7 HIGH Grav: Remote code execution via unrestricted callable in Blueprint::dynamicData()
CVE-2026-64852 8.7 HIGH Grav API Plugin: Missing authorization on API-key generate/revoke lets any admin.login use
CVE-2026-64851 8.5 HIGH Grav Shortcode Core Plugin: Stored XSS in shortcode-core attribute handlers
CVE-2026-62673 8.2 HIGH Grav: .htaccess file extension rules bypass via case variation on case-insensitive filesys
CVE-2026-63407 8.2 HIGH Grav API Plugin: CORS 'Access-Control-Allow-Origin: *' on Authenticated API Responses
CVE-2026-62667 8.1 HIGH Grav API Plugin : API Key 'scopes' Never Enforced - Delegated Least-Privilege Keys Carry F
CVE-2026-63408 7.5 HIGH Grav API Plugin: JWT Access Token Accepted via `?token=` URL Query Parameter
CVE-2026-62669 7.4 HIGH Grav Login Plugin: 2FA Bypass via 'login.regenerate2FASecret' - Secret Rotation During Pen
CVE-2026-61690 6.5 MEDIUM Grav: Decompression Bomb via ZipArchiver - Missing Extraction Limits
CVE-2026-61842 6.5 MEDIUM Grav: Twig sandbox config exfiltration via grav.offsetGet + dump filter (CVE-2026-44738 by
CVE-2026-62670 6.3 MEDIUM Fail-open authorization in grav-plugin-flex-objects admin-next API: api.access user gets f
CVE-2026-62672 6.0 MEDIUM Grav: Authenticated ReDoS via regex_replace in Twig Sandbox
CVE-2026-53654 5.3 MEDIUM Grav: Unauthenticated open redirect via login twofa_cancel _redirect
CVE-2026-61607 4.6 MEDIUM Grav API Plugin: Stored XSS via SVG Upload - API Media Pipeline Bypasses Sanitizer

IV. Related Vulnerabilities

Same vendor: getgrav
Same weakness: CWE-352

V. Comments for CVE-2026-62671

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