TI-2019-05331 Aliases CVE-2019-7550 GHSA-93h2-hj2q-42gj

In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists…

LOW 28CWE-209Published 2019-02-12 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-209.

Summary

In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists by using the "create user" function. If a register/check/username?username= request corresponds to a username that exists, then an "is already in use" error is produced. NOTE: this product is discontinued.

Why it matters now

EPSS 0.01842 79th 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

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:jforum:jforum:2.1.8:::::::*	2.1.8	Vulnerable	Jforum

cpe:2.3:a:jforum:jforum:2.1.8:*:*:*:*:*:*:* Versions 2.1.8 Vulnerable ·Jforum

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-7550
2026-10-03 Alias added: GHSA-93h2-hj2q-42gj

References

Exploit 1

https://www.criticalstart.com/2019/02/information-disclosure-in-jforum-2-1-x-syntax/

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-2012-04512 Open redirect vulnerability in JForum 2.1.9 allows remote attackers to redirect users to… CVSS 2.0MEDIUM 5.8
TI-2021-17554 ViewCommon.java in JForum2 2.7.0 allows XSS via a user signature. CVSS 3.1MEDIUM 5.4
TI-2012-04511 Multiple cross-site scripting (XSS) vulnerabilities in jforum.page in JForum 2.1.9 allow… CVSS 2.0MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences