VulnerabilityModified
CVE-2021-39609
Cross Site Scripting (XSS) vulnerability exiss in FlatCore-CMS 2.0.7 via the upload image function.
MEDIUM 5.4EPSS 1.70%
Does this matter?
Lower severity and a low EPSS score (1.70%). Track it; it rarely justifies an emergency change on its own.
Description
Cross Site Scripting (XSS) vulnerability exiss in FlatCore-CMS 2.0.7 via the upload image function.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.70% probability · 77th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- flatcore/flatcore-cms
- Source
- cve@mitre.org
EPSS 1.7% 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/flatCore/flatCore-CMS/issues/53Exploit, Third Party Advisory
- https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-39609Exploit, Third Party Advisory
- https://www.nu11secur1ty.com/2021/08/cve-2021-39609.htmlExploit, Third Party Advisory
- https://github.com/flatCore/flatCore-CMS/issues/53Exploit, Third Party Advisory
- https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-39609Exploit, Third Party Advisory
- https://www.nu11secur1ty.com/2021/08/cve-2021-39609.htmlExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.