CVE-2026-24988Network attack vector

Stored browser-script execution via unescaped block options

Published Feb 3, 2026 · Updated Feb 3, 2026

Stored XSS in The Events Calendar Shortcode & Block 3.1.1 and earlier allows remote authenticated users to inject browser scripts. Block option values were emitted with insufficient escaping before 3.1.2; public records do not identify the affected option or exact code path. Contributor-level access is required, and exploitation depends on a privileged user interacting with the stored payload, which executes in that user's browser.

CVSS severity6.5
Medium
EPSS probability0.13%
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 The Events Calendar Shortcode & Block 3.1.1 and earlier allows remote authenticated users to inject browser scripts. Block option values were emitted with insufficient escaping before 3.1.2; public records do not identify the affected option or exact code path. Contributor-level access is required, and exploitation depends on a privileged user interacting with the stored payload, which executes in that user's browser.

The record

CVE
CVE-2026-24988
Published
Feb 3, 2026
Updated
Feb 3, 2026
Vendor
Event Calendar Newsletter
Product
The Events Calendar Shortcode & Block
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=n/a <=<= 3.1.1 changes=[{"at":"3.1.2","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Event Calendar Newsletter · The Events Calendar Shortcode & Blockversion=n/a <=<= 3.1.1 changes=[{"at":"3.1.2","status":"unaffected"}]

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
CAPEC-592Stored XSS
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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