What’s Vulnerable › Vulnerabilities

CVE-2021-27947

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-15 · updated 2026-06-17
• Weakness: CWE-89

Description

SQL Injection vulnerability in MyBB before 1.8.26 via the Copy Forum feature in Forum Management. (issue 2 of 3).

Affected products

• mybb: before 1.8.26 — fixed in 1.8.26

How to fix

Upgrade to a fixed version: mybb 1.8.26. Check the vendor advisory for mitigations.

References

• https://github.com/mybb/mybb/security/advisories/GHSA-jjx8-8mcp-7h65
• https://github.com/mybb/mybb/security/advisories/GHSA-jjx8-8mcp-7h65

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