CVE-2019-6979: An issue was discovered in the User IP History Logs (aka IP_History_Logs) plugin 1.0.2 for MyBB

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MEDIUM 6.1DOWNGRADE

CVE-2019-6979 is a medium-severity flaw (CVSS 6.1) affecting ip history logs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the User IP History Logs (aka IP_History_Logs) plugin 1.0.2 for MyBB. There is XSS via the admin/modules/tools/ip_history_logs.php useragent field.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.1% (top 18%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-01-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ip history logs project

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

Am I affected?

Timeline

2019-01-28 08:29 UTCPublished CVE record published
2026-06-17 02:39 UTCUpdated Record last modified

ip history logs project ip history logs DOWNGRADE

Affected: 1.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.2

1. Check installed version

apt-cache policy ip-history-logs || rpm -q ip-history-logs || ip-history-logs --version

2. No fixed release: DOWNGRADE to a release before 1.0.2 (Debian / Ubuntu)

apt-cache madison ip-history-logs sudo apt install ip-history-logs=<VERSION_BEFORE_1.0.2> sudo apt-mark hold ip-history-logs

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

dnf --showduplicates list ip-history-logs sudo dnf downgrade ip-history-logs-<VERSION_BEFORE_1.0.2> sudo dnf versionlock add ip-history-logs

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: MyBB IP History Logs Plugin 1.0.2 - Cross-Site Scripting

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-2019-6979?

ip history logs: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-6979 being exploited?

CVE-2019-6979 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-2019-6979 affect?

CVE-2019-6979 affects ip history logs. Severity is medium (CVSS 6.1). An issue was discovered in the User IP History Logs (aka IP_History_Logs) plugin 1.0.2 for MyBB. There is XSS via the admin/modules/tools/ip_history_logs.php useragent field.

How urgent is CVE-2019-6979?

Priority 47/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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