CVE-2017-18494: The custom-search-plugin plugin before 1.36 for WordPress has multiple XSS issues.

Q: How do I fix CVE-2017-18494?

custom search: upgrade to 1.36. Exact commands for each OS are on this page.

Q: Is CVE-2017-18494 being exploited?

CVE-2017-18494 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-2017-18494 affect?

CVE-2017-18494 affects custom search. Severity is medium (CVSS 6.1). The custom-search-plugin plugin before 1.36 for WordPress has multiple XSS issues.

Q: How urgent is CVE-2017-18494?

Priority 39/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2017-18494 is a medium-severity flaw (CVSS 6.1) affecting custom search. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The custom-search-plugin plugin before 1.36 for WordPress has multiple XSS issues.

Why this priority

No elevated risk signals yet

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	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-08-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bestwebsoft

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

Am I affected?

Timeline

2019-08-13 17:15 UTCPublished CVE record published
2026-06-17 01:12 UTCUpdated Record last modified

bestwebsoft custom search UPGRADE

Affected: < 1.36

Fixed in: 1.36

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy custom-search || rpm -q custom-search || custom-search --version

2. UPGRADE to 1.36 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade custom-search

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade custom-search

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.

Nuclei scan template: Custom Search by BestWebSoft < 1.36 - 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-2017-18494?

custom search: upgrade to 1.36. Exact commands for each OS are on this page.

Is CVE-2017-18494 being exploited?

CVE-2017-18494 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-2017-18494 affect?

CVE-2017-18494 affects custom search. Severity is medium (CVSS 6.1). The custom-search-plugin plugin before 1.36 for WordPress has multiple XSS issues.

How urgent is CVE-2017-18494?

Priority 39/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2014-8320 LOW 3.5 DOWNGRADE Cross-site scripting (XSS) vulnerability in the Custom Search module 6.x-1.x before 6.x-1.12 and 7.x-1.x befor

References

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