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CVE-2020-23762: Cross Site Scripting (XSS) vulnerability in the Larsens Calender plugin Version <= 1.2 for WordPress allows re

38
Routine
MEDIUM 5.4UPGRADE

CVE-2020-23762 is a medium-severity flaw (CVSS 5.4) affecting larsens calendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting (XSS) vulnerability in the Larsens Calender plugin Version <= 1.2 for WordPress allows remote attackers to execute arbitrary web script via the "titel" column on the "Eintrage hinzufugen" tab.

Why this priority

  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score5.4 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionRequired
EPSS exploit chance0.8% (top 44%)
CISA exploited listNo
WeaknessCWE-79
Published2021-04-09
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: larsens calendar project

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

Am I affected?

Timeline

larsens calendar project larsens calendar UPGRADE
Affected: <= 1.2
Fixed in: newer than 1.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy larsens-calendar || rpm -q larsens-calendar || larsens-calendar --version
2. UPGRADE to newer than 1.2 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade larsens-calendar
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade larsens-calendar
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-2020-23762?

larsens calendar: upgrade to newer than 1.2. Exact commands for each OS are on this page.

Is CVE-2020-23762 being exploited?

CVE-2020-23762 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-2020-23762 affect?

CVE-2020-23762 affects larsens calendar. Severity is medium (CVSS 5.4). Cross Site Scripting (XSS) vulnerability in the Larsens Calender plugin Version <= 1.2 for WordPress allows remote attackers to execute arbitrary web script via the "titel" column on the "Eintrage hinzufugen" tab.

How urgent is CVE-2020-23762?

Priority 38/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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