CVE-2025-59827Network attack vector

Privilege escalation via unchecked badge assignment

Published Sep 24, 2025 · Updated Sep 24, 2025

Missing authorization in Flag Forge 2.1.0 allows remote authenticated users to assign themselves high-privilege badges. The /api/admin/assign-badge endpoint accepts a badge assignment without verifying that the requester has sufficient server-side permissions. Any account able to reach the endpoint can obtain a Staff badge, escalating privileges and enabling impersonation of an administrative role.

CVSS severity9.8
Critical
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Flag Forge 2.1.0 allows remote authenticated users to assign themselves high-privilege badges. The /api/admin/assign-badge endpoint accepts a badge assignment without verifying that the requester has sufficient server-side permissions. Any account able to reach the endpoint can obtain a Staff badge, escalating privileges and enabling impersonation of an administrative role.

The record

CVE
CVE-2025-59827
Published
Sep 24, 2025
Updated
Sep 24, 2025
Vendor
FlagForgeCTF
Product
flagForge
Classifications
CWE-862, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion== 2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FlagForgeCTF · flagForgeversion== 2.1.0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.2GitHub, Inc.CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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