CVE-2018-11430: An issue was discovered in the Moderator Log Notes plugin 1.1 for MyBB

Routine

MEDIUM 5.4DOWNGRADE

CVE-2018-11430 is a medium-severity flaw (CVSS 5.4) affecting moderator log notes. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the Moderator Log Notes plugin 1.1 for MyBB. It allows moderators to save notes and display them in a list in the modCP. The XSS is located in the mod notes textarea.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-05-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: moderator log notes project

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

Am I affected?

Timeline

2018-05-28 16:29 UTCPublished CVE record published
2026-06-17 01:35 UTCUpdated Record last modified

moderator log notes project moderator log notes DOWNGRADE

Affected: 1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

apt-cache policy moderator-log-notes || rpm -q moderator-log-notes || moderator-log-notes --version

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison moderator-log-notes sudo apt install moderator-log-notes=<VERSION_BEFORE_1.1> sudo apt-mark hold moderator-log-notes

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list moderator-log-notes sudo dnf downgrade moderator-log-notes-<VERSION_BEFORE_1.1> sudo dnf versionlock add moderator-log-notes

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2018-11430?

moderator log notes: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-11430 being exploited?

CVE-2018-11430 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-2018-11430 affect?

CVE-2018-11430 affects moderator log notes. Severity is medium (CVSS 5.4). An issue was discovered in the Moderator Log Notes plugin 1.1 for MyBB. It allows moderators to save notes and display them in a list in the modCP. The XSS is located in the mod notes textarea.

How urgent is CVE-2018-11430?

Priority 36/100. Public exploit reference

Related CVEs

CVE-2018-11502 MEDIUM 6.5 DOWNGRADE An issue was discovered in the Moderator Log Notes plugin 1.1 for MyBB

References

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