MyBB Recent threads 17.0 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by creating threads with crafted subject lines.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Apr 29, 2026 · NIST NVD

   Detected

   MyBB Recent threads 17.0 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by creating threads with crafted subject lines. Attackers can create threads with script tags in the subject parameter to execute arbitrary JavaScript in the browsers of all users viewing the index page.

2. Jun 17, 2026 · NIST NVD

   Updated

   MyBB Recent threads 17.0 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by creating threads with crafted subject lines. Attackers can create threads with script tags in the subject parameter to execute arbitrary JavaScript in the browsers of all users viewing the index page.

Affected

• cpe dragonexpert/recent threads on index17.0

Sources

• CVE.orgVulnerability recordCVE-2018-25309

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2018-25309

  MyBB Recent threads 17.0 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by creating threads with crafted subject lines. Attackers can create threads with script tags in the subject parameter to execute arbitrary JavaScri

  nvd.nist.gov

References

• Product · community.mybb.com
• Exploit · exploit-db.com
• Third Party Advisory · vulncheck.com