CVE-2026-21868 (CNNVD-202601-1576)
中文标题:
Flag Forge 安全漏洞
英文标题:
Flag Forge has ReDoS Vulnerability in User Profile Lookup API
漏洞描述
中文描述:
Flag Forge是FlagForge开源的一个易于使用的CTF平台。 Flag Forge 2.3.2及之前版本存在安全漏洞，该漏洞源于用户资料API端点存在正则表达式拒绝服务问题。
英文描述:
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.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| FlagForgeCTF | flagForge | < 2.3.3 | - | - |
cpe:2.3:a:flagforgectf:flagforge:<_2.3.3:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
参考链接
cve.org
CVSS评分详情
3.1 (cna)
HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2026-21868 |
2026-01-09 02:02:07 | 2026-01-12 02:12:37 |
| NVD | nvd_CVE-2026-21868 |
2026-01-09 03:00:09 | 2026-01-12 02:28:17 |
| CNNVD | cnnvd_CNNVD-202601-1576 |
2026-01-11 06:15:10 | 2026-01-12 02:38:15 |
版本与语言
安全公告
变更历史
查看详细变更
- vulnerability_type: 未提取 -> 其他
- cnnvd_id: 未提取 -> CNNVD-202601-1576
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- data_sources: ['cve'] -> ['cve', 'nvd']