TI-2022-21465 Aliases CVE-2022-43708

MyBB 1.8.31 has a (issue 2 of 2) cross-site scripting (XSS) vulnerabilities in the post…

LOW 27CWE-79Published 2022-11-21 · Updated 2025-04-29

Key facts

Attack vector: Network
Privileges required: None
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 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

MyBB 1.8.31 has a (issue 2 of 2) cross-site scripting (XSS) vulnerabilities in the post Attachments interface allow attackers to inject HTML by persuading the user to upload a file with specially crafted name

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00407 35th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

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:mybb:mybb::::::::	before 1.8.32	Vulnerable	mybb

cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:* Versions before 1.8.32 Vulnerable ·mybb

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2022-43708

References

Patch 1

https://github.com/mybb/mybb/security/advisories/GHSA-p9m7-9qv4-x93w

Other 1

https://mybb.com

TI-2011-04621 myBB 1.6.4 Backdoor Arbitrary Command Execution CVSS 4.0CRITICAL 10.0
TI-2022-08548 Remote code execution in mybb CVSS 3.1HIGH 7.2
TI-2023-21959 MyBB before 1.8.36 allows Code Injection by users with certain high privileges. CVSS 3.1HIGH 7.2
TI-2022-18641 Mail settings' command parameter injection in mybb CVSS 3.1HIGH 7.2
TI-2025-21092 An issue in MyBB 1.8.38 allows a remote attacker to obtain sensitive information via the… CVSS 3.1HIGH 7.6
TI-2025-21091 An issue in MyBB 1.8.38 allows a remote attacker to obtain sensitive information via the… CVSS 3.1HIGH 7.6

See all 139 →

Sources

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