CVE-2026-77187

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Source
https://cve.org/CVERecord?id=CVE-2026-77187
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77187.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-77187
Published
2026-09-09T03:28:47Z
Modified
2026-09-11T03:31:03Z
Severity
  • 6.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N CVSS Calculator
Summary
My Calendar <= 3.8.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'before' and 'after' Shortcode Attributes
Details

The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'before' and 'after' Shortcode Attributes in all versions up to, and including, 3.8.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Database specific 
{
    "cna_assigner": "Wordfence",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77187.json"
}
References

Affected packages

Git / github.com/joedolson/my-calendar

Affected ranges

Type
GIT
Repo
https://github.com/joedolson/my-calendar
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
89bbf7314fac84cdb89e520e8b7b6d69eee8dd3c
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "3.8.3"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

3.*
3.2.0-RC1
v.*
v.3.0.6
v.3.7.11
v3.*
v3.0.0
v3.0.1
v3.0.10
v3.0.11
v3.0.12
v3.0.13
v3.0.14
v3.0.15
v3.0.16
v3.0.17
v3.0.18
v3.0.3
v3.0.4
v3.0.5
v3.0.7
v3.0.8
v3.0.9
v3.1.0
v3.1.1
v3.1.10
v3.1.11
v3.1.12
v3.1.13
v3.1.14
v3.1.15
v3.1.16
v3.1.17
v3.1.18
v3.1.2
v3.1.3
v3.1.4
v3.1.6
v3.1.7
v3.1.8
v3.1.9
v3.2.0
v3.2.0-beta
v3.2.10
v3.2.11
v3.2.12
v3.2.13
v3.2.14
v3.2.15
v3.2.16
v3.2.17
v3.2.2
v3.2.3
v3.2.4
v3.2.5
v3.2.6
v3.2.8
v3.2.9
v3.3.0
v3.3.0-RC1
v3.3.0-RC2
v3.3.0-RC3
v3.3.0-RC4
v3.3.0-alpha-2
v3.3.0-beta-1
v3.3.1
v3.3.10
v3.3.11
v3.3.12
v3.3.13
v3.3.14
v3.3.15
v3.3.16
v3.3.17
v3.3.18
v3.3.19
v3.3.2
v3.3.20
v3.3.21
v3.3.22
v3.3.23
v3.3.24
v3.3.24.1
v3.3.3
v3.3.4
v3.3.5
v3.3.6
v3.3.7
v3.3.8
v3.3.9
v3.4.0
v3.4.0-RC-1
v3.4.0-RC-2
v3.4.0-RC-3
v3.4.0-RC-4
v3.4.0-beta-1
v3.4.0-beta-2
v3.4.0-beta-3
v3.4.1
v3.4.10
v3.4.11
v3.4.12
v3.4.13
v3.4.14
v3.4.15
v3.4.16
v3.4.17
v3.4.18
v3.4.19
v3.4.2
v3.4.20
v3.4.21
v3.4.3
v3.4.4
v3.4.5
v3.4.6
v3.4.7
v3.4.8
v3.4.9
v3.5.0
v3.5.0-alpha
v3.5.0-beta1
v3.5.0-beta2
v3.5.0-beta3
v3.5.0-rc1
v3.5.0-rc2
v3.5.1
v3.5.10
v3.5.11
v3.5.12
v3.5.13
v3.5.14
v3.5.15
v3.5.16
v3.5.17
v3.5.18
v3.5.19
v3.5.2
v3.5.20
v3.5.21
v3.5.3
v3.5.4
v3.5.5
v3.5.6
v3.5.7
v3.5.8
v3.5.9
v3.6.0
v3.6.0-RC1
v3.6.0-beta1
v3.6.1
v3.6.10
v3.6.11
v3.6.12
v3.6.13
v3.6.14
v3.6.15
v3.6.16
v3.6.2
v3.6.3
v3.6.4
v3.6.5
v3.6.6
v3.6.7
v3.6.8
v3.6.9
v3.7.0
v3.7.0-beta
v3.7.0-rc1
v3.7.1
v3.7.10
v3.7.12
v3.7.13
v3.7.14
v3.7.15
v3.7.16
v3.7.17
v3.7.2
v3.7.3
v3.7.4
v3.7.5
v3.7.6
v3.7.7
v3.7.8
v3.7.9
v3.8.0
v3.8.1
v3.8.2
v3.8.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77187.json"