CVE-2024-11716 json
While assignment of a user to a team (bracket) in CTFd should be possible only once, at the registration, a flaw in logic implementation al…
published 2025-01-02 22 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-34048
- cvss
- 5.3
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 11.6%
- EPSS 11.6% chance of exploitation in 30 days, percentile 96%
- public exploits
- 0
- none known
Summary
While assignment of a user to a team (bracket) in CTFd should be possible only once, at the registration, a flaw in logic implementation allows an authenticated user to reset it's bracket and then pick a new one, joining another team while a competition is already ongoing. This issue impacts releases from 3.7.0 up to 3.7.4 and was addressed by pull request 2636 https://github.com/CTFd/CTFd/pull/2636 included in 3.7.5 release.
Patch / fix
- github.com/CTFd/CTFd#2636 pull request
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 22 mo ago
Exploit prediction
11.58% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- seclists.org https://seclists.org/fulldisclosure/2024/Dec/21 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- CTFd CTFd
Classification
- Weakness
-
- CWE-837 Improper Enforcement of a Single, Unique Action
References
-
github.com
/CTFd/CTFd/pull/2636
patch
-
seclists.org
/fulldisclosure/2024/Dec/21
mailing-list, exploit
-
blog.ctfd.io
/ctfd-3-7-5/
vendor-advisory
-
cert.pl
/en/posts/2025/01/CVE-2024-11716
third-party-advisory
-
ctfd.io
/
product
- seclists.org /fulldisclosure/2024/Dec/21
Sources
- CVE List CVE-2024-11716
- NVD CVE-2024-11716
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.