ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.
Priority LOW 26CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature.
Why it matters now
EPSS 0.00958 61st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-40509
- 2026-10-03 Alias added: GHSA-hfxg-ph49-2mw5
References
More Jforum vulnerabilities
- TI-2022-09616 JForum v2.8.0 was discovered to contain a Cross-Site Request Forgery (CSRF) via… CVSS 3.1HIGH 8.8
- TI-2013-05892 Cross-site request forgery (CSRF) vulnerability in admBase/login.page in the Admin module… CVSS 2.0MEDIUM 6.8
- TI-2019-05331 In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists… CVSS 3.0MEDIUM 5.3
- TI-2012-04512 Open redirect vulnerability in JForum 2.1.9 allows remote attackers to redirect users to… CVSS 2.0MEDIUM 5.8
- TI-2012-04511 Multiple cross-site scripting (XSS) vulnerabilities in jforum.page in JForum 2.1.9 allow… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2021-40509 · CVE Program
- CVE-2021-40509 · NVD
- FIRST EPSS
- GHSA-hfxg-ph49-2mw5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences