CVE-2014-5345: Cross-site scripting (XSS) vulnerability in upgrade.php in the Disqus Comment System plugin before 2.76 for Wo

Q: How do I fix CVE-2014-5345?

disqus comment system: upgrade to newer than 2.75. Exact commands for each OS are on this page.

Q: Is CVE-2014-5345 being exploited?

CVE-2014-5345 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-2014-5345 affect?

CVE-2014-5345 affects disqus comment system. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in upgrade.php in the Disqus Comment System plugin before 2.76 for WordPress allows remote attackers to inject arbitrary web script or HTML via the step parameter.

Q: How urgent is CVE-2014-5345?

Priority 43/100. EPSS top 7%: very likely to be exploited; Public exploit reference

This month

MEDIUM 4.3UPGRADE

CVE-2014-5345 is a medium-severity flaw (CVSS 4.3) affecting disqus comment system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in upgrade.php in the Disqus Comment System plugin before 2.76 for WordPress allows remote attackers to inject arbitrary web script or HTML via the step parameter.

Why this priority

EPSS top 7%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	6.1% (top 7%)
CISA exploited list	No
Weakness	CWE-79
Published	2014-08-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: disqus

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

Am I affected?

Timeline

2014-08-19 19:55 UTCPublished CVE record published
2026-06-17 00:11 UTCUpdated Record last modified

disqus disqus comment system UPGRADE

Affected: <= 2.75 · 2.40 · 2.41 · 2.42 · 2.43 · 2.44 · 2.45 · 2.46

Fixed in: newer than 2.75

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy disqus-comment-system || rpm -q disqus-comment-system || disqus-comment-system --version

2. UPGRADE to newer than 2.75 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade disqus-comment-system

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade disqus-comment-system

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: WordPress Plugin Disqus 2.7.5 - Cross-Site Request Forgery (Admin Persistent) / 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-2014-5345?

disqus comment system: upgrade to newer than 2.75. Exact commands for each OS are on this page.

Is CVE-2014-5345 being exploited?

CVE-2014-5345 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-2014-5345 affect?

CVE-2014-5345 affects disqus comment system. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in upgrade.php in the Disqus Comment System plugin before 2.76 for WordPress allows remote attackers to inject arbitrary web script or HTML via the step parameter.

How urgent is CVE-2014-5345?

Priority 43/100. EPSS top 7%: very likely to be exploited; Public exploit reference

Software pages

WordPress vulnerabilities · PHP vulnerabilities

Related CVEs

CVE-2014-5347 MEDIUM 6.8 UPGRADE Multiple cross-site request forgery (CSRF) vulnerabilities in the Disqus Comment System plugin before 2.76 for
CVE-2014-5346 MEDIUM 6.8 DOWNGRADE Multiple cross-site request forgery (CSRF) vulnerabilities in the Disqus Comment System plugin 2.77 for WordPr

References

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