CVE-2019-12363: An CSRF issue was discovered in the JN-Jones MyBB-2FA plugin through 2014-11-05 for MyBB

Q: How do I fix CVE-2019-12363?

mybb-2fa: upgrade to newer than 2014-11-05. Exact commands for each OS are on this page.

Q: Is CVE-2019-12363 being exploited?

CVE-2019-12363 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-12363 affect?

CVE-2019-12363 affects mybb-2fa. Severity is high (CVSS 8.8). An CSRF issue was discovered in the JN-Jones MyBB-2FA plugin through 2014-11-05 for MyBB. An attacker can forge a request to an installed mybb2fa plugin to control its state via usercp.php?action=mybb2fa&do=deactivate (or usercp.php?action=

Q: How urgent is CVE-2019-12363?

Priority 48/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2019-12363 is a high-severity flaw (CVSS 8.8) affecting mybb-2fa. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An CSRF issue was discovered in the JN-Jones MyBB-2FA plugin through 2014-11-05 for MyBB. An attacker can forge a request to an installed mybb2fa plugin to control its state via usercp.php?action=mybb2fa&do=deactivate (or usercp.php?action=mybb2fa&do=activate). A deactivate operation lowers the security of the targeted account by disabling two factor authentication.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-352
Published	2019-07-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mybb-2fa project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-07-11 14:15 UTCPublished CVE record published
2026-06-17 02:14 UTCUpdated Record last modified

mybb-2fa project mybb-2fa UPGRADE

Affected: <= 2014-11-05

Fixed in: newer than 2014-11-05

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mybb-2fa || rpm -q mybb-2fa || mybb-2fa --version

2. UPGRADE to newer than 2014-11-05 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mybb-2fa

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mybb-2fa

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2019-12363?

mybb-2fa: upgrade to newer than 2014-11-05. Exact commands for each OS are on this page.

Is CVE-2019-12363 being exploited?

CVE-2019-12363 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-2019-12363 affect?

CVE-2019-12363 affects mybb-2fa. Severity is high (CVSS 8.8). An CSRF issue was discovered in the JN-Jones MyBB-2FA plugin through 2014-11-05 for MyBB. An attacker can forge a request to an installed mybb2fa plugin to control its state via usercp.php?action=mybb2fa&do=deactivate (or usercp.php?action=

How urgent is CVE-2019-12363?

Priority 48/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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