CVE-2018-10365: An XSS issue was discovered in the Threads to Link plugin 1.3 for MyBB

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MEDIUM 5.4DOWNGRADE

CVE-2018-10365 is a medium-severity flaw (CVSS 5.4) affecting threads to link. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An XSS issue was discovered in the Threads to Link plugin 1.3 for MyBB. When editing a thread, the user is given the option to convert the thread to a link. The thread link input box is not properly sanitized.

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	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-05-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: threads to link project

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

Am I affected?

Timeline

2018-05-01 16:29 UTCPublished CVE record published
2026-06-17 01:33 UTCUpdated Record last modified

threads to link project threads to link DOWNGRADE

Affected: 1.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3

1. Check installed version

apt-cache policy threads-to-link || rpm -q threads-to-link || threads-to-link --version

2. No fixed release: DOWNGRADE to a release before 1.3 (Debian / Ubuntu)

apt-cache madison threads-to-link sudo apt install threads-to-link=<VERSION_BEFORE_1.3> sudo apt-mark hold threads-to-link

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

dnf --showduplicates list threads-to-link sudo dnf downgrade threads-to-link-<VERSION_BEFORE_1.3> sudo dnf versionlock add threads-to-link

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 Threads to Link Plugin 1.3 - 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-2018-10365?

threads to link: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-10365 being exploited?

CVE-2018-10365 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-2018-10365 affect?

CVE-2018-10365 affects threads to link. Severity is medium (CVSS 5.4). An XSS issue was discovered in the Threads to Link plugin 1.3 for MyBB. When editing a thread, the user is given the option to convert the thread to a link. The thread link input box is not properly sanitized.

How urgent is CVE-2018-10365?

Priority 42/100. Public exploit reference

References

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