CVE-2026-9507: CWE-38 Path traversal: '\absolute\pathname\here' in Enhancesoft osTicket
osTicket version 1.18.2 contains a session fixation vulnerability where the session identifier (OSTSESSID) is not invalidated or regenerated after login. This allows an attacker who sets a known session ID in a victim's browser to hijack the victim's authenticated session and gain unauthorized access.
AI Analysis
Technical Summary
CVE-2026-9507 is a session fixation vulnerability in Enhancesoft osTicket version 1.18.2. The application fails to invalidate or regenerate the session identifier after user authentication, allowing an attacker who can set a known session ID in the victim's browser to maintain unauthorized access to the victim's account post-login. This vulnerability is classified under CWE-38 and has a CVSS 4.0 base score of 5.1 (medium severity). No official patch or remediation guidance is currently available from the vendor.
Potential Impact
An attacker can hijack a victim's authenticated session by fixing the session ID before login and maintaining access after the victim authenticates. This compromises account confidentiality and integrity by allowing unauthorized access to the victim's account.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider implementing additional session management controls such as regenerating session IDs after login and invalidating pre-authentication sessions as a temporary mitigation.
CVE-2026-9507: CWE-38 Path traversal: '\absolute\pathname\here' in Enhancesoft osTicket
Description
osTicket version 1.18.2 contains a session fixation vulnerability where the session identifier (OSTSESSID) is not invalidated or regenerated after login. This allows an attacker who sets a known session ID in a victim's browser to hijack the victim's authenticated session and gain unauthorized access.
CVSS v4.0
Score 5.1medium
Affected software
pkg:github/enhancesoft/osticketRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-9507 is a session fixation vulnerability in Enhancesoft osTicket version 1.18.2. The application fails to invalidate or regenerate the session identifier after user authentication, allowing an attacker who can set a known session ID in the victim's browser to maintain unauthorized access to the victim's account post-login. This vulnerability is classified under CWE-38 and has a CVSS 4.0 base score of 5.1 (medium severity). No official patch or remediation guidance is currently available from the vendor.
Potential Impact
An attacker can hijack a victim's authenticated session by fixing the session ID before login and maintaining access after the victim authenticates. This compromises account confidentiality and integrity by allowing unauthorized access to the victim's account.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider implementing additional session management controls such as regenerating session IDs after login and invalidating pre-authentication sessions as a temporary mitigation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- INCIBE
- Date Reserved
- 2026-05-25T13:36:09.788Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a314c870b89be6888b4cf6d
Added to database: 6/16/2026, 1:15:51 PM
Last enriched: 6/16/2026, 1:30:50 PM
Last updated: 6/16/2026, 2:23:32 PM
Views: 3
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