PatchTheCVECVE-2025-48941: MyBB is free and open source forum software
CVE-2025-48941 is a medium-severity flaw (CVSS 5.3) affecting mybb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
MyBB is free and open source forum software. Prior to version 1.8.39, the search component does not validate permissions correctly, which allows attackers to determine the existence of hidden (draft, unapproved, or soft-deleted) threads containing specified text in the title. The visibility state (`mybb_threads.visible` integer column) of threads is not validated in internal search queries, whose result is used to output a general success or fail
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 71%) |
| CISA exploited list | No |
| Weakness | CWE-1230 |
| Published | 2025-06-02 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2025-48941?
mybb: upgrade to 1.8.39. Exact commands for each OS are on this page.
Is CVE-2025-48941 being exploited?
CVE-2025-48941 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2025-48941 affect?
CVE-2025-48941 affects mybb. Severity is medium (CVSS 5.3). MyBB is free and open source forum software. Prior to version 1.8.39, the search component does not validate permissions correctly, which allows attackers to determine the existence of hidden (draft, unapproved, or soft-deleted) threads con
How urgent is CVE-2025-48941?
Priority 31/100. Remotely exploitable, no login, no user action
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