CVE-2026-78145— CTFd __init__.py _is_safe_url redirect
Quick assessment
Affected
n/a CTFd
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 CTFd 3.8.4 及更早版本中发现了一个漏洞。受影响的组件是文件 CTFd/utils/validators/__init__.py 中的 _is_safe_url 函数。通过对 Next 参数进行操纵，可导致开放重定向漏洞。该漏洞可被远程利用。相关漏洞利用代码已公开，攻击者可加以利用。补丁提交为 5d8515842fd1ab2c3a9f2dde9ffca907aa334ea9。建议升级受影响的组件以修复此问题。
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-78145
Vulnerability Information
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Vulnerability Title
CTFd __init__.py _is_safe_url redirect
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in CTFd up to 3.8.4. The affected element is the function _is_safe_url of the file CTFd/utils/validators/__init__.py. Such manipulation of the argument Next leads to open redirect. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The name of the patch is 5d8515842fd1ab2c3a9f2dde9ffca907aa334ea9. Upgrading the affected component is recommended.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | CTFd | 3.8.0 |
cpe:2.3:a:ctfd:ctfd:*:*:*:*:*:*:*:*
|
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II. Public POCs for CVE-2026-78145
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-78145 (2)
Vendor Advisories for CVE-2026-78145 (2)
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🔗 CVE-2026-78145 in CTFd third-party-advisory
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Exploits & Public PoCs for CVE-2026-78145 (1)
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🔗 Submit #882469: CTFd https://github.com/CTFd/CTFd v3.8.4 Open Redirect third-party-advisory
Security Blog Posts for CVE-2026-78145 (1)
Vendor Pages for CVE-2026-78145 (1)
IV. Related Vulnerabilities
Same product: CTFd
Same vendor: n/a
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V. Comments for CVE-2026-78145
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