CVE-2018-25309MyBB 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.
Updated under an hour ago ()
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It affects dragonexpert recent_threads_on_index. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.1 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
dragonexpert recent_threads_on_index dragonexpert:recent_threads_on_index | 17.0 | NVD |
References
- https://community.mybb.com/mods.php?action=view&pid=191product
- https://www.exploit-db.com/exploits/44420exploit, vdb-entry
- https://www.vulncheck.com/advisories/mybb-recent-threads-persistent-cross-site-scriptingthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.