VulnerabilityModified
CVE-2021-27237
The admin panel in BlackCat CMS 1.3.6 allows stored XSS (by an admin) via the Display Name field to backend/preferences/ajax_save.php.
MEDIUM 4.8EPSS 0.96%
Does this matter?
Lower severity and a low EPSS score (0.96%). Track it; it rarely justifies an emergency change on its own.
Description
The admin panel in BlackCat CMS 1.3.6 allows stored XSS (by an admin) via the Display Name field to backend/preferences/ajax_save.php.
- CVSS 3.1
- 4.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.96% probability · 61th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- blackcat-cms/blackcat cms
- Source
- cve@mitre.org
EPSS 1.0% 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/BlackCatDevelopment/BlackCatCMS/commits/release-1.4/upload/backend/preferences/ajax_save.phpPatch, Third Party Advisory
- https://github.com/BlackCatDevelopment/BlackCatCMS/compare/1.3.6...1.4BetaPatch, Third Party Advisory
- https://www.exploit-db.com/exploits/49565Exploit, Third Party Advisory, VDB Entry
- https://github.com/BlackCatDevelopment/BlackCatCMS/commits/release-1.4/upload/backend/preferences/ajax_save.phpPatch, Third Party Advisory
- https://github.com/BlackCatDevelopment/BlackCatCMS/compare/1.3.6...1.4BetaPatch, Third Party Advisory
- https://www.exploit-db.com/exploits/49565Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.