The Masteriyo LMS – LMS Course Builder, Quizzes & Certificates plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.2.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with student-level access and above, to modify the description (post content) of arbitrary course announcements authored by instructors or administrators.
CVE-2026-11773
MEDIUMPre-NVD 4.34.3—Trending — 3 sources updated this week
EchelonGraph scoreHIGH confidence
Score 4.3 from GitHub Security Advisory published 2026-06-27. a secondary CVSS source baseline 4.3; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.3
- EG Score
- 4.3(high)
- EPSS
- 4.6%
- KEV
- Not listed
Published
June 27, 2026
Last Modified
June 29, 2026
References (6)
- security@wordfencehttps://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.1.8/addons/course-announcement/Controllers/CourseAnnouncementController.php#L619
- security@wordfencehttps://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.1.8/addons/course-announcement/Controllers/CourseAnnouncementController.php#L782
- security@wordfencehttps://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.2.1/addons/course-announcement/Controllers/CourseAnnouncementController.php#L619
- security@wordfencehttps://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.2.1/addons/course-announcement/Controllers/CourseAnnouncementController.php#L782
- security@wordfencehttps://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3583519%40learning-management-system&new=3583519%40learning-management-system&sfp_email=&sfph_mail=
- security@wordfencehttps://www.wordfence.com/threat-intel/vulnerabilities/id/5780d762-2313-4c81-be02-99543359d824?source=cve
Vendor Advisories for CVE-2026-11773(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 24× in last 7d / 36× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-07 09:04 UTCEG score recompute
- 2026-07-07 09:04 UTCGHSA enrichment
- 2026-07-06 16:27 UTCEPSS rescore
- 2026-07-06 11:06 UTCEG score recompute
- 2026-07-06 11:06 UTCGHSA enrichment
- 2026-07-06 02:23 UTCEPSS rescore
- 2026-07-05 13:04 UTCEG score recompute
- 2026-07-05 13:04 UTCGHSA enrichment
- 2026-07-05 02:30 UTCEPSS rescore
- 2026-07-05 02:30 UTCEPSS rescore
- 2026-07-04 15:06 UTCEG score recompute
- 2026-07-04 15:06 UTCGHSA enrichment
- 2026-07-04 06:31 UTCEPSS rescore
- 2026-07-03 17:08 UTCEG score recompute
- 2026-07-03 17:08 UTCGHSA enrichment
- 2026-07-02 19:10 UTCEG score recompute
- 2026-07-02 19:10 UTCGHSA enrichment
- 2026-07-01 21:11 UTCEG score recompute
- 2026-07-01 21:11 UTCGHSA enrichment
- 2026-07-01 15:06 UTCEPSS rescore
- 2026-07-01 15:06 UTCEPSS rescore
- 2026-06-30 23:22 UTCEPSS rescore
- 2026-06-30 23:13 UTCEG score recompute
- 2026-06-30 23:13 UTCGHSA enrichment
- 2026-06-30 01:15 UTCEG score recompute
Show 11 moreShow fewer
- 2026-06-30 01:15 UTCGHSA enrichment
- 2026-06-29 14:06 UTCEPSS rescore
- 2026-06-29 03:17 UTCEG score recompute
- 2026-06-29 03:17 UTCGHSA enrichment
- 2026-06-28 14:07 UTCEPSS rescore
- 2026-06-28 05:17 UTCEG score recompute
- 2026-06-28 05:17 UTCGHSA enrichment
- 2026-06-28 04:56 UTCEPSS rescore
- 2026-06-28 04:56 UTCEPSS rescore
- 2026-06-27 07:19 UTCEG score recompute
- 2026-06-27 07:19 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-11773?
CVE-2026-11773 is a medium vulnerability published on June 27, 2026. The Masteriyo LMS – LMS Course Builder, Quizzes & Certificates plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.2.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for…
When was CVE-2026-11773 disclosed?
CVE-2026-11773 was first published in the National Vulnerability Database on June 27, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11773 actively exploited?
CVE-2026-11773 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11773?
CVE-2026-11773 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-11773?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11773, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-11773
Is Your Infrastructure Affected by CVE-2026-11773?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.