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Fencer Vulns
medium 5.4

CVE-2020-23762 json

Cross Site Scripting (XSS) vulnerability in the Larsens Calender plugin Version <= 1.2 for WordPress allows remote attackers to execute arb…

published 2021-04-09 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-16502

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

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.

Exploit prediction

0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • hidden-one.co.in http://hidden-one.co.in/2021/04/09/cve-2020-23762-stored-xss-vulnerability-in-the-larsens-calender-plugin-version/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.