by Kastro
Paper/Archive/CVE-2025-12813

CVE-2025-12813

strix-bubol5 Holiday class post calendar — Holiday class post calendar <= 7.1 - Unauthenticated Remote Code Execution via 'contents'

EPSS 0.9%CVSS 9.8
critical.is priorityof 100
41
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 60.1.601 × 2012.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

The Holiday class post calendar plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 7.1 via the 'contents' parameter. This is due to a lack of sanitization of user-supplied data when creating a cache file. This makes it possible for unauthenticated attackers to execute code on the server.

Affected

ProductAffectedFixed inSource
Holiday class post calendar≤ 7.1–CNA

Scores by source

Wordfence (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refwordfence.com/threat-intel/vulnerabilities/id/7f7968c4-589c-4949-9f69-4a0ba4db4ea9?source=cverefplugins.trac.wordpress.org/browser/holiday-class-post-calendar/trunk/holiday_class_post_calendar.php#L1234refplugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3414925%40holiday-class-post-calendar&new=3414925%40holiday-class-post-calendar&sfp_email=&sfph_mail=