VulnerabilityModified
CVE-2021-40509
ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.
MEDIUM 5.4EPSS 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
ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.
- 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
- 0.96% probability · 61th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- jforum/jforum
- 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
- http://packetstormsecurity.com/files/164045/jforum-2.7.0-Cross-Site-Scripting.htmlThird Party Advisory
- http://seclists.org/fulldisclosure/2021/Sep/13Mailing List, Third Party Advisory
- https://lists.openwall.net/full-disclosure/2021/09/03/7Exploit, Mailing List, Third Party Advisory
- https://sourceforge.net/p/jforum2/code/934/Patch, Third Party Advisory
- http://packetstormsecurity.com/files/164045/jforum-2.7.0-Cross-Site-Scripting.htmlThird Party Advisory
- http://seclists.org/fulldisclosure/2021/Sep/13Mailing List, Third Party Advisory
- https://lists.openwall.net/full-disclosure/2021/09/03/7Exploit, Mailing List, Third Party Advisory
- https://sourceforge.net/p/jforum2/code/934/Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.