CVE-2017-18540: The weblibrarian plugin before 3.4.8.7 for WordPress has XSS via front-end short codes.

Q: How do I fix CVE-2017-18540?

weblibrarian: upgrade to 3.4.8.7. Exact commands for each OS are on this page.

Q: Is CVE-2017-18540 being exploited?

CVE-2017-18540 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-2017-18540 affect?

CVE-2017-18540 affects weblibrarian. Severity is medium (CVSS 6.1). The weblibrarian plugin before 3.4.8.7 for WordPress has XSS via front-end short codes.

Q: How urgent is CVE-2017-18540?

Priority 36/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2017-18540 is a medium-severity flaw (CVSS 6.1) affecting weblibrarian. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The weblibrarian plugin before 3.4.8.7 for WordPress has XSS via front-end short codes.

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	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-08-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: deepsoft

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

Am I affected?

Timeline

2019-08-21 12:15 UTCPublished CVE record published
2026-06-17 01:13 UTCUpdated Record last modified

deepsoft weblibrarian UPGRADE

Affected: < 3.4.8.7

Fixed in: 3.4.8.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy weblibrarian || rpm -q weblibrarian || weblibrarian --version

2. UPGRADE to 3.4.8.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade weblibrarian

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade weblibrarian

Note

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

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-2017-18540?

weblibrarian: upgrade to 3.4.8.7. Exact commands for each OS are on this page.

Is CVE-2017-18540 being exploited?

CVE-2017-18540 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-2017-18540 affect?

CVE-2017-18540 affects weblibrarian. Severity is medium (CVSS 6.1). The weblibrarian plugin before 3.4.8.7 for WordPress has XSS via front-end short codes.

How urgent is CVE-2017-18540?

Priority 36/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2023-29441 HIGH 7.1 UPGRADE Unauth
CVE-2019-1010034 MEDIUM 6.5 UPGRADE Deepwoods Software WebLibrarian 3.5.2 and earlier is affected by: SQL Injection
CVE-2017-18539 MEDIUM 6.1 UPGRADE The weblibrarian plugin before 3.4.8.6 for WordPress has XSS via front-end short codes.
CVE-2017-18538 MEDIUM 6.1 UPGRADE The weblibrarian plugin before 3.4.8.5 for WordPress has XSS via front-end short codes.

References

← Back to latest CVEs