CVE-2026-2355Network attack vector

Stored script execution via decoded shortcode escapes

Published Mar 4, 2026 · Updated Mar 4, 2026

Stored XSS in Accessible Event Manager 3.7.3 and earlier allows remote authenticated users to inject scripts through a shortcode template. The mc_draw_template() function applies stripcslashes() at render time, decoding hex escapes such as \x3c after wp_kses_post() sanitized the saved value. Contributor-level access is sufficient, and the stored script executes in the browser of anyone who opens the affected page.

CVSS severity6.4
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Accessible Event Manager 3.7.3 and earlier allows remote authenticated users to inject scripts through a shortcode template. The mc_draw_template() function applies stripcslashes() at render time, decoding hex escapes such as \x3c after wp_kses_post() sanitized the saved value. Contributor-level access is sufficient, and the stored script executes in the browser of anyone who opens the affected page.

The record

CVE
CVE-2026-2355
Published
Mar 4, 2026
Updated
Mar 4, 2026
Vendor
Damion Armentrout
Product
My Calendar
Classifications
CWE-79, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=3.7.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Damion Armentrout · My Calendarversion=* <=3.7.3

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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