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TI-2025-09011 Aliases CVE-2025-9823GHSA-9v8p-m85m-f7mm

Reflected XSS in lead:addLeadTags - Quick Add

Priority LOW 22CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

SummaryA Cross-Site Scripting (XSS) vulnerability allows an attacker to execute arbitrary JavaScript in the context of another user’s session. This occurs because user-supplied input is reflected back in the server’s response without proper sanitization or escaping, potentially enabling malicious actions such as session hijacking, credential theft, or unauthorized actions in the application. DetailsThe vulnerability resides in the “Tags” input field on the /s/ajax?action=lead:addLeadTags endpoint. Although the server applies sanitization before storing the data or returning it later, the payload is executed immediately in the victim’s browser upon reflection, allowing an attacker to run arbitrary JavaScript in the user’s session. ImpactA Reflected XSS attack can have a significant impact, allowing attackers to steal sensitive user data like cookies, redirect users to malicious websites, manipulate the web page content, and essentially take control of a user's session within an application by executing malicious JavaScript code within the victim's browser, even if the server-side code is secure; essentially enabling them to perform actions as if they were the logged-in user. References * Web Security Academy: Cross-site scripting https://portswigger.net/web-security/cross-site-scripting * Web Security Academy: Reflected cross-site scripting https://portswigger.net/web-security/cross-site-scripting/reflected

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00317 24th percentileScored 2026-11-07
Fix Fixed Mautic (Mautic): < 4.4.17, < 5.2.8, < 6.0.5mautic/core (Packagist): 4.4.17, 5.2.8, 6.0.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MauticMautic>= 4.4.0 to before < 4.4.17; >= 5.0.0-alpha to before < 5.2.8; >= 6.0.0-alpha to before < 6.0.5< 4.4.17, < 5.2.8, < 6.0.5Patch availableCNA
—mautic/core (Packagist)4.4.0 to before 4.4.174.4.17Patch availableGHSA-9v8p-m85m-f7mm
—mautic/core (Packagist)5.0.0-alpha to before 5.2.85.2.8Patch availableGHSA-9v8p-m85m-f7mm
—mautic/core (Packagist)6.0.0-alpha to before 6.0.56.0.5Patch availableGHSA-9v8p-m85m-f7mm
  • Mautic VendorMautic Affected >= 4.4.0 to before < 4.4.17; >= 5.0.0-alpha to before < 5.2.8; >= 6.0.0-alpha to before < 6.0.5 Fixed in < 4.4.17, < 5.2.8, < 6.0.5 Patch available CNA
  • mautic/core (Packagist) Vendor— Affected 4.4.0 to before 4.4.17 Fixed in 4.4.17 Patch available GHSA-9v8p-m85m-f7mm
  • mautic/core (Packagist) Vendor— Affected 5.0.0-alpha to before 5.2.8 Fixed in 5.2.8 Patch available GHSA-9v8p-m85m-f7mm
  • mautic/core (Packagist) Vendor— Affected 6.0.0-alpha to before 6.0.5 Fixed in 6.0.5 Patch available GHSA-9v8p-m85m-f7mm

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:*——Acquia
  • cpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:* Versions — — ·Acquia

Remediation

  • Fix · CNA Mautic (Mautic) Fixed in < 4.4.17, < 5.2.8, < 6.0.5
  • Fix · GHSA-9v8p-m85m-f7mm mautic/core (Packagist) Fixed in 4.4.17 Advisory →
  • Fix · GHSA-9v8p-m85m-f7mm mautic/core (Packagist) Fixed in 5.2.8 Advisory →
  • Fix · GHSA-9v8p-m85m-f7mm mautic/core (Packagist) Fixed in 6.0.5 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mautic < 4.4.17, < 5.2.8, < 6.0.5

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-9823
  2. 2026-10-03 Alias added: GHSA-9v8p-m85m-f7mm

References

Advisory 1

Other 2

  • TI-2022-09344 Cross-site scripting in Mautic CVSS 3.1CRITICAL 9.6
  • TI-2024-02543 Predictable Page Indexing Might Lead to Sensitive Data Exposure in Mautic CVSS 3.1MEDIUM 5.3
  • TI-2024-02544 Improper Access Control Issues Lead to Sensitive Data Exposure in Mautic CVSS 3.1MEDIUM 5.4
  • TI-2024-03218 Improper Access Control Leads to Server-Side Request Forgery in Mautic CVSS 3.1MEDIUM 5.0
  • TI-2024-31435 Remote Code Execution & File Deletion in Asset Uploads CVSS 3.1CRITICAL 9.9
  • TI-2018-05847 Mautic before 2.13.0 allows CSV injection. CVSS 3.0CRITICAL 9.8
See all 48 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences