CVE-2026-42458: CWE-87: Improper Neutralization of Alternate XSS Syntax in OpenMage magento-lts
Magento Long Term Support (LTS) versions prior to 20. 18. 0 contain a reflected cross-site scripting (XSS) vulnerability in the admin panel under System -> Import/Export -> Dataflow - Profiles. This vulnerability is identified as CWE-87, involving improper neutralization of alternate XSS syntax. The issue is fixed in version 20. 18. 0. The CVSS 4. 0 base score is 5. 3, indicating a medium severity level.
AI Analysis
Technical Summary
CVE-2026-42458 is a reflected XSS vulnerability in OpenMage magento-lts versions before 20.18.0. It occurs in the admin panel's System -> Import/Export -> Dataflow - Profiles section due to improper neutralization of alternate XSS syntax (CWE-87). This allows an attacker to inject malicious scripts that could be executed in the context of an administrator's browser session. The vulnerability has a CVSS 4.0 score of 5.3, reflecting medium severity. The issue is resolved in version 20.18.0.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary scripts in the context of an administrator's session, potentially leading to session hijacking or unauthorized actions within the admin panel. However, exploitation requires user interaction (UI:P) and no privileges or authentication are needed (PR:N). The vulnerability is limited to versions prior to 20.18.0.
Mitigation Recommendations
Upgrade to OpenMage magento-lts version 20.18.0 or later, where this vulnerability is fixed. Since the vendor advisory indicates the issue is resolved in 20.18.0, applying this official fix is the recommended remediation. No additional mitigation guidance is provided or necessary.
CVE-2026-42458: CWE-87: Improper Neutralization of Alternate XSS Syntax in OpenMage magento-lts
Description
Magento Long Term Support (LTS) versions prior to 20. 18. 0 contain a reflected cross-site scripting (XSS) vulnerability in the admin panel under System -> Import/Export -> Dataflow - Profiles. This vulnerability is identified as CWE-87, involving improper neutralization of alternate XSS syntax. The issue is fixed in version 20. 18. 0. The CVSS 4. 0 base score is 5. 3, indicating a medium severity level.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-42458 is a reflected XSS vulnerability in OpenMage magento-lts versions before 20.18.0. It occurs in the admin panel's System -> Import/Export -> Dataflow - Profiles section due to improper neutralization of alternate XSS syntax (CWE-87). This allows an attacker to inject malicious scripts that could be executed in the context of an administrator's browser session. The vulnerability has a CVSS 4.0 score of 5.3, reflecting medium severity. The issue is resolved in version 20.18.0.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary scripts in the context of an administrator's session, potentially leading to session hijacking or unauthorized actions within the admin panel. However, exploitation requires user interaction (UI:P) and no privileges or authentication are needed (PR:N). The vulnerability is limited to versions prior to 20.18.0.
Mitigation Recommendations
Upgrade to OpenMage magento-lts version 20.18.0 or later, where this vulnerability is fixed. Since the vendor advisory indicates the issue is resolved in 20.18.0, applying this official fix is the recommended remediation. No additional mitigation guidance is provided or necessary.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-27T13:55:58.694Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a075665ec166c07b072346f
Added to database: 5/15/2026, 5:22:45 PM
Last enriched: 5/15/2026, 5:37:36 PM
Last updated: 5/15/2026, 7:27:41 PM
Views: 6
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.