CVE-2026-42157: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in reconurge flowsint
CVE-2026-42157 is a medium severity stored cross-site scripting (XSS) vulnerability in the open-source OSINT tool Flowsint prior to version 1. 2. 3. An attacker with limited privileges can create a map node with a malicious label containing arbitrary HTML. When a user selects the map tab and clicks the malicious node marker, the arbitrary HTML is rendered, potentially executing malicious scripts. This vulnerability has been fixed in version 1. 2. 3.
AI Analysis
Technical Summary
Flowsint versions before 1.2.3 contain a stored XSS vulnerability (CWE-79) where user-supplied input in map node labels is not properly neutralized. This allows an attacker with limited privileges to inject arbitrary HTML that is rendered when interacting with the map node markers, leading to potential script execution in the context of the victim's browser. The vulnerability is addressed in Flowsint 1.2.3.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary scripts in the context of a victim's browser when they interact with a malicious map node. This can lead to session hijacking, information disclosure, or other actions permitted by the victim's privileges. The CVSS 4.0 base score is 5.1, indicating medium severity.
Mitigation Recommendations
Upgrade Flowsint to version 1.2.3 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are documented. Users should apply this update to prevent exploitation.
CVE-2026-42157: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in reconurge flowsint
Description
CVE-2026-42157 is a medium severity stored cross-site scripting (XSS) vulnerability in the open-source OSINT tool Flowsint prior to version 1. 2. 3. An attacker with limited privileges can create a map node with a malicious label containing arbitrary HTML. When a user selects the map tab and clicks the malicious node marker, the arbitrary HTML is rendered, potentially executing malicious scripts. This vulnerability has been fixed in version 1. 2. 3.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Flowsint versions before 1.2.3 contain a stored XSS vulnerability (CWE-79) where user-supplied input in map node labels is not properly neutralized. This allows an attacker with limited privileges to inject arbitrary HTML that is rendered when interacting with the map node markers, leading to potential script execution in the context of the victim's browser. The vulnerability is addressed in Flowsint 1.2.3.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary scripts in the context of a victim's browser when they interact with a malicious map node. This can lead to session hijacking, information disclosure, or other actions permitted by the victim's privileges. The CVSS 4.0 base score is 5.1, indicating medium severity.
Mitigation Recommendations
Upgrade Flowsint to version 1.2.3 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are documented. Users should apply this update to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-24T17:15:21.835Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a03d8cbcbff5d86103ec198
Added to database: 5/13/2026, 1:50:03 AM
Last enriched: 5/13/2026, 1:50:20 AM
Last updated: 5/13/2026, 4:49:49 AM
Views: 4
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