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CVE-2026-9507

MEDIUM
5.1
CVSS 4.0
Description
A session fixation vulnerability has been identified in osTicket v1.18.2. This security flaw allows an attacker to hijack a victim’s account by keeping the initial session identifier (OSTSESSID) active after a successful login. The issue lies in the fact that the application does not invalidate the pre-authentication cookie or generate a new identifier for the authenticated context. As a result, if an attacker manages to set a known session identifier in the victim’s browser, they will be able to maintain unauthorised access to the account once the victim has authenticated.

Metadata

CVE ID
CVE-2026-9507
State
PUBLISHED
Assigner
INCIBE
Reserved
2026-05-25 13:36 UTC
Published
2026-06-16 11:47 UTC
Last updated
2026-06-16 16:18 UTC
Primary CWE
CWE-38
CWE-38 Path traversal: '\absolute\pathname\here'
Vendor / Product
Enhancesoft / osTicket
Sources
cve.org  ·  NVD

Severity & Metrics

5.1 MEDIUM CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
Enhancesoft osTicket — 1.18.2
Weakness (CWE)
CWESourceDescription
CWE-38 cna CWE-38 Path traversal: '\absolute\pathname\here'
CVSS scores (1)
ScoreSeverityVersionSourceVector
5.1 MEDIUM 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
References (1)
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