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16 vulnerabilities found for flagforge by flagforge
CVE-2026-21868 (GCVE-0-2026-21868)
Vulnerability from cvelistv5 – Published: 2026-01-08 00:26 – Updated: 2026-01-08 19:06
VLAI
Title
Flag Forge has ReDoS Vulnerability in User Profile Lookup API
Summary
Flag Forge is a Capture The Flag (CTF) platform. Versions 2.3.2 and below have a Regular Expression Denial of Service (ReDoS) vulnerability in the user profile API endpoint (/api/user/[username]). The application constructs a regular expression dynamically using unescaped user input (the username parameter). An attacker can exploit this by sending a specially crafted username containing regex meta-characters (e.g., deeply nested groups or quantifiers), causing the MongoDB regex engine to consume excessive CPU resources. This can lead to Denial of Service for other users. The issue is fixed in version 2.3.3. To workaround this issue, implement a Web Application Firewall (WAF) rule to block requests containing regex meta-characters in the URL path.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
< 2.3.3
|
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CVE-2025-61777 (GCVE-0-2025-61777)
Vulnerability from cvelistv5 – Published: 2025-10-06 16:44 – Updated: 2026-01-28 23:09
VLAI
Title
FlagForge Allows Unauthenticated Badge Template API Access
Summary
Flag Forge is a Capture The Flag (CTF) platform. Starting in version 2.0.0 and prior to version 2.3.2, the `/api/admin/badge-templates` (GET) and `/api/admin/badge-templates/create` (POST) endpoints previously allowed access without authentication or authorization. This could have enabled unauthorized users to retrieve all badge templates and sensitive metadata (createdBy, createdAt, updatedAt) and/or create arbitrary badge templates in the database. This could lead to data exposure, database pollution, or abuse of the badge system. The issue has been fixed in FlagForge v2.3.2. GET, POST, UPDATE, and DELETE endpoints now require authentication. Authorization checks ensure only admins can access and modify badge templates. No reliable workarounds are available.
Severity
9.4 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
| https://github.com/FlagForgeCTF/flagForge/commit/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
>= 2.0.0, < 2.3.2
|
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CVE-2025-59932 (GCVE-0-2025-59932)
Vulnerability from cvelistv5 – Published: 2025-09-27 00:51 – Updated: 2025-09-29 14:13
VLAI
Title
FlagForgeCTF Unauthenticated Resource Modification/Deletion
Summary
Flag Forge is a Capture The Flag (CTF) platform. From versions 2.0.0 to before 2.3.1, the /api/resources endpoint previously allowed POST and DELETE requests without proper authentication or authorization. This could have enabled unauthorized users to create, modify, or delete resources on the platform. The issue has been fixed in FlagForge version 2.3.1.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-284 - Improper Access Control
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
>= 2.0.0, < 2.3.1
|
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CVE-2025-59843 (GCVE-0-2025-59843)
Vulnerability from cvelistv5 – Published: 2025-09-26 16:03 – Updated: 2026-01-28 23:11
VLAI
Title
FlagForgeCTF Exposes User Emails via Public /api/user/[username] API
Summary
Flag Forge is a Capture The Flag (CTF) platform. From versions 2.0.0 to before 2.3.2, the public endpoint /api/user/[username] returns user email addresses in its JSON response. The fix, intended for release in 2.3.1 but only available starting in version 2.3.2, removes email addresses from public API responses while keeping the endpoint publicly accessible. Users should upgrade to version 2.3.2 or later to eliminate exposure. There are no workarounds for this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-359 - Exposure of Private Personal Information to an Unauthorized Actor
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
| https://github.com/FlagForgeCTF/flagForge/commit/… | x_refsource_MISC |
| https://github.com/FlagForgeCTF/flagForge/compare… | x_refsource_MISC |
| https://github.com/FlagForgeCTF/flagForge/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
>= 2.0.0, < 2.3.2
|
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CVE-2025-59841 (GCVE-0-2025-59841)
Vulnerability from cvelistv5 – Published: 2025-09-25 15:15 – Updated: 2025-09-29 15:48
VLAI
Title
FlagForgeCTF's Improper Session Handling Allows Access After Logout
Summary
Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.2.0 to before 2.3.1, the FlagForge web application improperly handles session invalidation. Authenticated users can continue to access protected endpoints, such as /api/profile, even after logging out. CSRF tokens are also still valid post-logout, which can allow unauthorized actions. This issue has been patched in version 2.3.1.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
| https://github.com/FlagForgeCTF/flagForge/commit/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
>= 2.2.0, < 2.3.1
|
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CVE-2025-59833 (GCVE-0-2025-59833)
Vulnerability from cvelistv5 – Published: 2025-09-24 20:25 – Updated: 2025-09-24 20:44
VLAI
Title
FlagForgeCTF Hint Exposure via API
Summary
Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.1.0 to before 2.3.0, the API endpoint GET /api/problems/:id returns challenge hints in plaintext within the question object, regardless of whether the user has unlocked them via point deduction. Users can view all hints for free, undermining the business logic of the platform and reducing the integrity of the challenge system. This issue has been patched in version 2.3.0.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
>= 2.1.0, < 2.3.0
|
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CVE-2025-59827 (GCVE-0-2025-59827)
Vulnerability from cvelistv5 – Published: 2025-09-24 20:23 – Updated: 2025-09-24 20:39
VLAI
Title
FlagForgeCTF is Missing Authorization in main-v2
Summary
Flag Forge is a Capture The Flag (CTF) platform. In version 2.1.0, the /api/admin/assign-badge endpoint lacks proper access control, allowing any authenticated user to assign high-privilege badges (e.g., Staff) to themselves. This could lead to privilege escalation and impersonation of administrative roles. This issue has been patched in version 2.2.0.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
= 2.1.0
|
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CVE-2025-59826 (GCVE-0-2025-59826)
Vulnerability from cvelistv5 – Published: 2025-09-23 20:26 – Updated: 2025-09-24 13:23
VLAI
Title
FlagForgeCTF Vulnerable to Unauthorized Problem Creation
Summary
Flag Forge is a Capture The Flag (CTF) platform. In version 2.1.0, non-admin users can create arbitrary challenges, potentially introducing malicious, incorrect, or misleading content. This issue has been patched in version 2.2.0.
Severity
7.6 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
= 2.1.0
|
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CVE-2026-21868 (GCVE-0-2026-21868)
Vulnerability from nvd – Published: 2026-01-08 00:26 – Updated: 2026-01-08 19:06
VLAI
Title
Flag Forge has ReDoS Vulnerability in User Profile Lookup API
Summary
Flag Forge is a Capture The Flag (CTF) platform. Versions 2.3.2 and below have a Regular Expression Denial of Service (ReDoS) vulnerability in the user profile API endpoint (/api/user/[username]). The application constructs a regular expression dynamically using unescaped user input (the username parameter). An attacker can exploit this by sending a specially crafted username containing regex meta-characters (e.g., deeply nested groups or quantifiers), causing the MongoDB regex engine to consume excessive CPU resources. This can lead to Denial of Service for other users. The issue is fixed in version 2.3.3. To workaround this issue, implement a Web Application Firewall (WAF) rule to block requests containing regex meta-characters in the URL path.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
< 2.3.3
|
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CVE-2025-61777 (GCVE-0-2025-61777)
Vulnerability from nvd – Published: 2025-10-06 16:44 – Updated: 2026-01-28 23:09
VLAI
Title
FlagForge Allows Unauthenticated Badge Template API Access
Summary
Flag Forge is a Capture The Flag (CTF) platform. Starting in version 2.0.0 and prior to version 2.3.2, the `/api/admin/badge-templates` (GET) and `/api/admin/badge-templates/create` (POST) endpoints previously allowed access without authentication or authorization. This could have enabled unauthorized users to retrieve all badge templates and sensitive metadata (createdBy, createdAt, updatedAt) and/or create arbitrary badge templates in the database. This could lead to data exposure, database pollution, or abuse of the badge system. The issue has been fixed in FlagForge v2.3.2. GET, POST, UPDATE, and DELETE endpoints now require authentication. Authorization checks ensure only admins can access and modify badge templates. No reliable workarounds are available.
Severity
9.4 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
| https://github.com/FlagForgeCTF/flagForge/commit/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
>= 2.0.0, < 2.3.2
|
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CVE-2025-59932 (GCVE-0-2025-59932)
Vulnerability from nvd – Published: 2025-09-27 00:51 – Updated: 2025-09-29 14:13
VLAI
Title
FlagForgeCTF Unauthenticated Resource Modification/Deletion
Summary
Flag Forge is a Capture The Flag (CTF) platform. From versions 2.0.0 to before 2.3.1, the /api/resources endpoint previously allowed POST and DELETE requests without proper authentication or authorization. This could have enabled unauthorized users to create, modify, or delete resources on the platform. The issue has been fixed in FlagForge version 2.3.1.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-284 - Improper Access Control
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
>= 2.0.0, < 2.3.1
|
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CVE-2025-59843 (GCVE-0-2025-59843)
Vulnerability from nvd – Published: 2025-09-26 16:03 – Updated: 2026-01-28 23:11
VLAI
Title
FlagForgeCTF Exposes User Emails via Public /api/user/[username] API
Summary
Flag Forge is a Capture The Flag (CTF) platform. From versions 2.0.0 to before 2.3.2, the public endpoint /api/user/[username] returns user email addresses in its JSON response. The fix, intended for release in 2.3.1 but only available starting in version 2.3.2, removes email addresses from public API responses while keeping the endpoint publicly accessible. Users should upgrade to version 2.3.2 or later to eliminate exposure. There are no workarounds for this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-359 - Exposure of Private Personal Information to an Unauthorized Actor
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
| https://github.com/FlagForgeCTF/flagForge/commit/… | x_refsource_MISC |
| https://github.com/FlagForgeCTF/flagForge/compare… | x_refsource_MISC |
| https://github.com/FlagForgeCTF/flagForge/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
>= 2.0.0, < 2.3.2
|
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CVE-2025-59841 (GCVE-0-2025-59841)
Vulnerability from nvd – Published: 2025-09-25 15:15 – Updated: 2025-09-29 15:48
VLAI
Title
FlagForgeCTF's Improper Session Handling Allows Access After Logout
Summary
Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.2.0 to before 2.3.1, the FlagForge web application improperly handles session invalidation. Authenticated users can continue to access protected endpoints, such as /api/profile, even after logging out. CSRF tokens are also still valid post-logout, which can allow unauthorized actions. This issue has been patched in version 2.3.1.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
| https://github.com/FlagForgeCTF/flagForge/commit/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
>= 2.2.0, < 2.3.1
|
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CVE-2025-59833 (GCVE-0-2025-59833)
Vulnerability from nvd – Published: 2025-09-24 20:25 – Updated: 2025-09-24 20:44
VLAI
Title
FlagForgeCTF Hint Exposure via API
Summary
Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.1.0 to before 2.3.0, the API endpoint GET /api/problems/:id returns challenge hints in plaintext within the question object, regardless of whether the user has unlocked them via point deduction. Users can view all hints for free, undermining the business logic of the platform and reducing the integrity of the challenge system. This issue has been patched in version 2.3.0.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
>= 2.1.0, < 2.3.0
|
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CVE-2025-59827 (GCVE-0-2025-59827)
Vulnerability from nvd – Published: 2025-09-24 20:23 – Updated: 2025-09-24 20:39
VLAI
Title
FlagForgeCTF is Missing Authorization in main-v2
Summary
Flag Forge is a Capture The Flag (CTF) platform. In version 2.1.0, the /api/admin/assign-badge endpoint lacks proper access control, allowing any authenticated user to assign high-privilege badges (e.g., Staff) to themselves. This could lead to privilege escalation and impersonation of administrative roles. This issue has been patched in version 2.2.0.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
= 2.1.0
|
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CVE-2025-59826 (GCVE-0-2025-59826)
Vulnerability from nvd – Published: 2025-09-23 20:26 – Updated: 2025-09-24 13:23
VLAI
Title
FlagForgeCTF Vulnerable to Unauthorized Problem Creation
Summary
Flag Forge is a Capture The Flag (CTF) platform. In version 2.1.0, non-admin users can create arbitrary challenges, potentially introducing malicious, incorrect, or misleading content. This issue has been patched in version 2.2.0.
Severity
7.6 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/FlagForgeCTF/flagForge/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FlagForgeCTF | flagForge |
Affected:
= 2.1.0
|
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