CVE-2026-25133 | October LMS up to 3.7.13/4.1.9 SVG File Parser cross site scripting (GHSA-gcqv-f29m-67gr)

VDB-357604 · CVE-2026-25133 · GHSA-GCQV-F29M-67GR OCTOBER LMS UP TO 3.7.13/4.1.9 SVG FILE PARSER CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 2.3 $0-$5k 2.03+ Summaryinfo A vulnerability, which was classified as problematic, was found in October LMS up to 3.7.13/4.1.9. Impacted is an unknown function of the component SVG File Parser. Executing a manipulation can lead to cross site scripting. The identification of this vulnerability is CVE-2026-25133. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component. Detailsinfo A vulnerability was found in October LMS up to 3.7.13/4.1.9. It has been declared as problematic. This vulnerability affects some unknown functionality of the component SVG File Parser. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes: October is a Content Management System (CMS) and web platform. Versions prior to 3.7.14 and 4.1.10 contain a stored cross-site scripting (XSS) vulnerability in the SVG sanitization logic. The regex pattern used to strip event handler attributes (such as onclick or onload) could be bypassed using a crafted payload that exploits how the pattern matches attribute boundaries, allowing malicious SVG files to be uploaded through the Media Manager with embedded JavaScript. Exploitation could lead to privilege escalation if a superuser views or embeds the malicious SVG, and requires authenticated backend access with media upload permissions. The SVG must be viewed or embedded in a page for the payload to trigger. This issue has been fixed in versions 3.7.14 and 4.1.10. The advisory is shared for download at github.com. This vulnerability was named CVE-2026-25133 since 01/29/2026. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are needed for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007. Upgrading to version 3.7.14 or 4.1.10 eliminates this vulnerability. Productinfo Vendor October Name LMS Version 3.7.0 3.7.1 3.7.2 3.7.3 3.7.4 3.7.5 3.7.6 3.7.7 3.7.8 3.7.9 3.7.10 3.7.11 3.7.12 3.7.13 4.1.0 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.1.6 4.1.7 4.1.8 4.1.9 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 2.4 VulDB Meta Temp Score: 2.3 VulDB Base Score: 2.4 VulDB Temp Score: 2.3 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: LMS 3.7.14/4.1.10 Timelineinfo 01/29/2026 CVE reserved 04/14/2026 +74 days Advisory disclosed 04/14/2026 +0 days VulDB entry created 04/14/2026 +0 days VulDB entry last update Sourcesinfo Advisory: GHSA-gcqv-f29m-67gr Status: Confirmed CVE: CVE-2026-25133 (🔒) GCVE (CVE): GCVE-0-2026-25133 GCVE (VulDB): GCVE-100-357604 Entryinfo Created: 04/14/2026 23:58 Changes: 04/14/2026 23:58 (68) Complete: 🔍 Cache ID: 99:E2F:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸