TI-2020-17425 Aliases CVE-2020-28873 GHSA-275f-jq4p-wxgw

Fluxbb 1.5.11 is affected by a denial of service (DoS) vulnerability by sending an…

LOW 34CWE-916Published 2021-03-17 · Updated 2026-07-09

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Fluxbb 1.5.11 is affected by a denial of service (DoS) vulnerability by sending an extremely long password via the user login form. When a long password is sent, the password hashing process will result in CPU and memory exhaustion on the server.

Why it matters now

EPSS 0.00858 58th percentileScored 2026-11-07

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:fluxbb:fluxbb:1.5.11:::::::*	1.5.11	Vulnerable	FluxBB

cpe:2.3:a:fluxbb:fluxbb:1.5.11:*:*:*:*:*:*:* Versions 1.5.11 Vulnerable ·FluxBB

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-28873
2026-10-03 Alias added: GHSA-275f-jq4p-wxgw

References

Other 1

https://www.acunetix.com/vulnerabilities/web/long-password-denial-of-service/#:~:text=By%20sending%20a%20very%20long%2Ca%20vulnerable%20password%20hashing%20implementation

TI-2025-28590 FluxBB 1.5.11 is vulnerable to Cross Site Scripting (XSS) in via the Forum Description Field in admin_forums.php. CVSS 3.1MEDIUM 5.4
TI-2014-07771 Directory traversal vulnerability in install.php in FluxBB before 1.5.8 allows remote… CVSS 2.0HIGH 9.3
TI-2011-03195 A reverse proxy issue exists in FluxBB before 1.4.7 when FORUM_BEHIND_REVERSE_PROXY is enabled. CVSS 3.1CRITICAL 9.8
TI-2014-08191 SQL injection vulnerability in profile.php in FluxBB before 1.4.13 and 1.5.x before 1.5.7… CVSS 2.0HIGH 7.5
TI-2014-08192 Open redirect vulnerability in forums/login.php in FluxBB before 1.4.13 and 1.5.x before… CVSS 2.0MEDIUM 5.8
TI-2021-19513 Fluxbb v1.4.12 is affected by a Cross Site Scripting (XSS) vulnerability. CVSS 3.1MEDIUM 6.1

See all 7 →

Sources

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