CVE-2021-21329
RATCF is an open-source framework for hosting Cyber-Security Capture the Flag events.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
RATCF is an open-source framework for hosting Cyber-Security Capture the Flag events. In affected versions of RATCF users with multi factor authentication enabled are able to log in without a valid token. This is fixed in commit cebb67b.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.62% probability · 76th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- ratcf/ratcf
- Source
- security-advisories@github.com
EPSS 1.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/ractf/core/commit/c57a4d186bfc586ad3edfe4dcba9f11efbf22f09#diff-60c444c47c061306f2dff5bf97c07810f40f949a8e94ecbb609b6b29364c8642R130-R152Patch, Third Party Advisory
- https://github.com/ractf/core/commit/cebb67bd16a8296121201805332365ffccb29638Patch, Third Party Advisory
- https://github.com/ractf/core/security/advisories/GHSA-fw57-f7mq-9q85Patch, Third Party Advisory
- https://github.com/ractf/core/commit/c57a4d186bfc586ad3edfe4dcba9f11efbf22f09#diff-60c444c47c061306f2dff5bf97c07810f40f949a8e94ecbb609b6b29364c8642R130-R152Patch, Third Party Advisory
- https://github.com/ractf/core/commit/cebb67bd16a8296121201805332365ffccb29638Patch, Third Party Advisory
- https://github.com/ractf/core/security/advisories/GHSA-fw57-f7mq-9q85Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.