CVE-2025-58031Network attack vector

Stored XSS via unsanitized shortcode heading

Published Sep 22, 2025 · Updated May 13, 2026

Stored XSS in Nextendweb Nextend Social Login 3.1.19 and earlier allows remote authenticated users to run scripts in visitors' browsers. The shortcode handler renders the attacker-controlled heading parameter into page output without adequate sanitization or output escaping. Contributor-level access is required to store the shortcode, and exploitation occurs when another user views the affected content.

CVSS severity6.5
Medium
EPSS probability0.21%
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 Nextendweb Nextend Social Login 3.1.19 and earlier allows remote authenticated users to run scripts in visitors' browsers. The shortcode handler renders the attacker-controlled heading parameter into page output without adequate sanitization or output escaping. Contributor-level access is required to store the shortcode, and exploitation occurs when another user views the affected content.

The record

CVE
CVE-2025-58031
Published
Sep 22, 2025
Updated
May 13, 2026
Vendor
Nextendweb
Product
Nextend Social Login
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 22, 2025CVE publishedPublication date reported by the CVE source.
  2. May 13, 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=0 <=3.1.19 changes=[{"at":"3.1.20","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nextendweb · Nextend Social Loginversion=0 <=3.1.19 changes=[{"at":"3.1.20","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.

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Technologies

Your stack

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Your stack

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