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CVE-2025-66306

Grav vulnerable to Information Disclosure via IDOR in Grav Admin Panel

4.3 MediumFix available

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, there is an IDOR (Insecure Direct Object Reference) vulnerability in the Grav CMS Admin Panel which allows low-privilege users to access sensitive information from other accounts. Although direct account takeover is not possible, admin email addresses and other metadata can be exposed, increasing the risk of phishing, credential stuffing, and social engineering. This vulnerability is fixed in 1.8.0-beta.27.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

0.32%Up 0.3 points since Dec 2, 2025
90%50%10%1%

What each source reports

CVE List Score used 4.3

Grav vulnerable to Information Disclosure via IDOR in Grav Admin Panel

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, there is an IDOR (Insecure Direct Object Reference) vulnerability in the Grav CMS Admin Panel which allows low-privilege users to access sensitive information from other accounts. Although direct account takeover is not possible, admin email addresses and other metadata can be exposed, increasing the risk of phishing, credential stuffing, and social engineering. This vulnerability is fixed in 1.8.0-beta.27.

Record
CVE-2025-66306
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-639
Updated
2026-11-02
EUVDEUVD-2025-200104 4.3

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, there is an IDOR (Insecure Direct Object Reference) vulnerability in the Grav CMS Admin Panel which allows low-privilege users to access sensitive information from other accounts. Although direct account takeover is not possible, admin email addresses and other metadata can be exposed, increasing the risk of phishing, credential stuffing, and social engineering. This vulnerability is fixed in 1.8.0-beta.27.

Record
EUVD-2025-200104
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-4cwq-j7jv-qmwg 4.3

Grav vulnerable to Information Disclosure via IDOR in Grav Admin Panel

Summary

An IDOR (Insecure Direct Object Reference) vulnerability in the Grav CMS Admin Panel allows low-privilege users to access sensitive information from other accounts. Although direct account takeover is not possible, admin email addresses and other metadata can be exposed, increasing the risk of phishing, credential stuffing, and social engineering.

Details

  • Endpoint: /admin/accounts/users/{username}
  • Tested Version: Grav Admin 1.7.48
  • Affected Accounts: Authenticated users with 0 privileges (non-privileged accounts)

Description: Requesting another user’s account details (e.g., /admin/accounts/users/admin) as a low-privilege user returns an HTTP 403 Forbidden response. However, sensitive information such as the admin’s email address is still present in the response source, specifically in the <title> tag.

system/src/Grav/Common/Flex/Types/Users/UserCollection.php <img width="700" height="327" alt="Screenshot 2025-08-24 021027" src="https://github.com/user-attachments/assets/7e69ae49-d8fc-442f-b00c-9efaec706b2e" />

system/blueprints/flex/user-accounts.yaml <img width="700" height="300" alt="Screenshot 2025-08-24 020521" src="https://github.com/user-attachments/assets/756631c8-d60b-4b84-a08a-2a9c2f81b41f" />

This is a classic IDOR vulnerability, where object references (usernames) are not properly protected from unauthorized enumeration.

PoC

  1. Log in as a non-privileged user (0-privilege account).

  2. Access another user’s endpoint, for example:

    GET /admin/accounts/users/admin

  3. Observe the HTTP 403 Forbidden response.

  4. Inspect the page source; sensitive data such as the admin email can be seen in the <title> tag.

PoC Video:

https://drive.google.com/file/d/1lY_qwqSkN5sPNmHvXGOk6R1mdIgVt71H/view

Impact

  • Type: Information Disclosure via IDOR
  • Who is impacted: Low-privilege authenticated users can enumerate other accounts and extract sensitive metadata (admin emails).
  • Risk: Exposed information can be used for targeted phishing, credential stuffing, brute-force attacks, or social engineering campaigns.
  • Severity Justification: Only a low-privilege account is required, and sensitive metadata is leaked. Arbitrary code execution is not possible, but the information exposure is moderate risk.

Disclosure & CVE Request

  • We request a CVE ID for this vulnerability once validated.

  • Please credit the discovery to:

    • Elvin Nuruyev
    • Kanan Farzalili
Record
GHSA-4cwq-j7jv-qmwg
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-639
Updated
2026-11-02
NVD 4.3

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, there is an IDOR (Insecure Direct Object Reference) vulnerability in the Grav CMS Admin Panel which allows low-privilege users to access sensitive information from other accounts. Although direct account takeover is not possible, admin email addresses and other metadata can be exposed, increasing the risk of phishing, credential stuffing, and social engineering. This vulnerability is fixed in 1.8.0-beta.27.

Record
CVE-2025-66306
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-639
Updated
2026-11-02
OSV 4.3

Grav vulnerable to Information Disclosure via IDOR in Grav Admin Panel

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, there is an IDOR (Insecure Direct Object Reference) vulnerability in the Grav CMS Admin Panel which allows low-privilege users to access sensitive information from other accounts. Although direct account takeover is not possible, admin email addresses and other metadata can be exposed, increasing the risk of phishing, credential stuffing, and social engineering. This vulnerability is fixed in 1.8.0-beta.27.

Record
CVE-2025-66306
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-639
Updated
2026-11-02
OSVGHSA-4cwq-j7jv-qmwg 4.3

Grav vulnerable to Information Disclosure via IDOR in Grav Admin Panel

Summary

An IDOR (Insecure Direct Object Reference) vulnerability in the Grav CMS Admin Panel allows low-privilege users to access sensitive information from other accounts. Although direct account takeover is not possible, admin email addresses and other metadata can be exposed, increasing the risk of phishing, credential stuffing, and social engineering.

Details

  • Endpoint: /admin/accounts/users/{username}
  • Tested Version: Grav Admin 1.7.48
  • Affected Accounts: Authenticated users with 0 privileges (non-privileged accounts)

Description: Requesting another user’s account details (e.g., /admin/accounts/users/admin) as a low-privilege user returns an HTTP 403 Forbidden response. However, sensitive information such as the admin’s email address is still present in the response source, specifically in the <title> tag.

system/src/Grav/Common/Flex/Types/Users/UserCollection.php <img width="700" height="327" alt="Screenshot 2025-08-24 021027" src="https://github.com/user-attachments/assets/7e69ae49-d8fc-442f-b00c-9efaec706b2e" />

system/blueprints/flex/user-accounts.yaml <img width="700" height="300" alt="Screenshot 2025-08-24 020521" src="https://github.com/user-attachments/assets/756631c8-d60b-4b84-a08a-2a9c2f81b41f" />

This is a classic IDOR vulnerability, where object references (usernames) are not properly protected from unauthorized enumeration.

PoC

  1. Log in as a non-privileged user (0-privilege account).

  2. Access another user’s endpoint, for example:

    GET /admin/accounts/users/admin

  3. Observe the HTTP 403 Forbidden response.

  4. Inspect the page source; sensitive data such as the admin email can be seen in the <title> tag.

PoC Video:

https://drive.google.com/file/d/1lY_qwqSkN5sPNmHvXGOk6R1mdIgVt71H/view

Impact

  • Type: Information Disclosure via IDOR
  • Who is impacted: Low-privilege authenticated users can enumerate other accounts and extract sensitive metadata (admin emails).
  • Risk: Exposed information can be used for targeted phishing, credential stuffing, brute-force attacks, or social engineering campaigns.
  • Severity Justification: Only a low-privilege account is required, and sensitive metadata is leaked. Arbitrary code execution is not possible, but the information exposure is moderate risk.

Disclosure & CVE Request

  • We request a CVE ID for this vulnerability once validated.

  • Please credit the discovery to:

    • Elvin Nuruyev
    • Kanan Farzalili
Record
GHSA-4cwq-j7jv-qmwg
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-639
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
getgrav/grav
Packagist
 before 1.8.0-beta.27
1.8.0-beta.27
getgrav/grav
Packagist
 before 1.8.0-beta.27, plus listed versions
0.8.00.9.00.9.10.9.100.9.11
Show 45 moreShow less
0.9.120.9.130.9.140.9.150.9.160.9.170.9.180.9.190.9.20.9.200.9.210.9.220.9.230.9.240.9.250.9.260.9.270.9.280.9.290.9.30.9.300.9.310.9.320.9.330.9.340.9.350.9.360.9.370.9.380.9.390.9.40.9.400.9.410.9.420.9.430.9.440.9.450.9.50.9.60.9.70.9.80.9.91.0.01.0.0-rc.11.0.0-rc.2
1.8.0-beta.27

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-66306 is a medium vulnerability (CVSS 4.3) in Getgrav Grav, published December 1, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 24th percentile. Fixed in getgrav/grav 1.8.0-beta.27.

References

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Left out here: 267 versions. The JSON record has them.

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