How severe is CVE-2015-2786?

CVE-2015-2786 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2015-2786 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2786?

CVE-2015-2786 affects Mybb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-2786?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2015-2786 published?

CVE-2015-2786 was published on 2015-03-29 and last updated on 2026-06-17.

CVE-2015-2786

CVE-2015-2786 is a critical-severity vulnerability in Mybb with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mybb
Published: 2015-03-29
Last modified: 2026-06-17

Description

Unspecified vulnerability in MyBB (aka MyBulletinBoard) before 1.8.4 has unknown attack vectors related to "Group join request notifications sent to wrong group leaders."

Frequently asked questions

What is CVE-2015-2786?: Unspecified vulnerability in MyBB (aka MyBulletinBoard) before 1.8.4 has unknown attack vectors related to "Group join request notifications sent to wrong group leaders."
How severe is CVE-2015-2786?: CVE-2015-2786 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2015-2786 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-2786?: CVE-2015-2786 affects Mybb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-2786?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-2786 published?: CVE-2015-2786 was published on 2015-03-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:*

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