How severe is CVE-2025-61777?

CVE-2025-61777 has a CVSS 3.x base score of 9.4, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2025-61777 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-61777?

CVE-2025-61777 affects Flagforge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-61777?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-61777 have an EU (EUVD) identifier?

Yes. CVE-2025-61777 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-33190.

When was CVE-2025-61777 published?

CVE-2025-61777 was published on 2025-10-06 and last updated on 2026-06-17.

CVE-2025-61777

CVE-2025-61777 is a critical-severity vulnerability in Flagforge with a CVSS 3.x base score of 9.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.4)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-33190
Weakness: CWE-306
Affected product: Flagforge
Published: 2025-10-06
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-61777?: 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.
How severe is CVE-2025-61777?: CVE-2025-61777 has a CVSS 3.x base score of 9.4, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2025-61777 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-61777?: CVE-2025-61777 affects Flagforge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-61777?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-61777 have an EU (EUVD) identifier?: Yes. CVE-2025-61777 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-33190.
When was CVE-2025-61777 published?: CVE-2025-61777 was published on 2025-10-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:flagforge:flagforge:*:*:*:*:*:*:*:*

More vulnerabilities in Flagforge

CVE-2025-59841 — Critical (CVSS 9.8): Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.2.0 to before 2.3.1, the FlagForge web application…
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