CVE-2018-14888: inc/plugins/thankyoulike.php in the Eldenroot Thank You/Like plugin before 3.1.0 for MyBB allows XSS via a pos

Q: How do I fix CVE-2018-14888?

thank you\/like: upgrade to 3.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2018-14888 being exploited?

CVE-2018-14888 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-2018-14888 affect?

CVE-2018-14888 affects thank you\/like. Severity is medium (CVSS 6.1). inc/plugins/thankyoulike.php in the Eldenroot Thank You/Like plugin before 3.1.0 for MyBB allows XSS via a post or thread subject.

Q: How urgent is CVE-2018-14888?

Priority 49/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2018-14888 is a medium-severity flaw (CVSS 6.1) affecting thank you\/like. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

inc/plugins/thankyoulike.php in the Eldenroot Thank You/Like plugin before 3.1.0 for MyBB allows XSS via a post or thread subject.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	3.7% (top 10%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-08-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: thank you\/like project

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

Am I affected?

Timeline

2018-08-14 18:29 UTCPublished CVE record published
2026-06-17 01:41 UTCUpdated Record last modified

thank you\/like project thank you\/like UPGRADE

Affected: < 3.1.0

Fixed in: 3.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy thank-youlike || rpm -q thank-youlike || thank-youlike --version

2. UPGRADE to 3.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade thank-youlike

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade thank-youlike

Note

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

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 Thank You/Like Plugin 3.0.0 - 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-2018-14888?

thank you\/like: upgrade to 3.1.0. Exact commands for each OS are on this page.

Is CVE-2018-14888 being exploited?

CVE-2018-14888 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-2018-14888 affect?

CVE-2018-14888 affects thank you\/like. Severity is medium (CVSS 6.1). inc/plugins/thankyoulike.php in the Eldenroot Thank You/Like plugin before 3.1.0 for MyBB allows XSS via a post or thread subject.

How urgent is CVE-2018-14888?

Priority 49/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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