{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-9507","assignerOrgId":"0cbda920-cd7f-484a-8e76-bf7f4b7f4516","state":"PUBLISHED","assignerShortName":"INCIBE","dateReserved":"2026-05-25T13:36:09.788Z","datePublished":"2026-06-16T11:47:56.882Z","dateUpdated":"2026-06-16T16:18:10.713Z"},"containers":{"cna":{"providerMetadata":{"orgId":"0cbda920-cd7f-484a-8e76-bf7f4b7f4516","shortName":"INCIBE","dateUpdated":"2026-06-16T11:50:42.928Z"},"title":"Session fixation vulnerability in Enhancesoft's osTicket","datePublic":"2026-06-16T11:44:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-38","description":"CWE-38 Path traversal: '\\absolute\\pathname\\here'","type":"CWE"}]}],"affected":[{"vendor":"Enhancesoft","product":"osTicket","versions":[{"status":"affected","version":"1.18.2"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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.\n\n\n\nThe 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.","supportingMedia":[{"type":"text/html","base64":false,"value":"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.\n<br>\n<br>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."}]}],"references":[{"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/session-fixation-vulnerability-enhancesofts-osticket","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":5.1,"vectorString":"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"}}],"solutions":[{"lang":"en","value":"The current (legacy) source code is in maintenance mode, whilst Enhancesoft is focusing on a complete rewrite of the code (v2.0). This means that release cycles and security updates for the legacy code have been significantly delayed.","supportingMedia":[{"type":"text/html","base64":false,"value":"The current (legacy) source code is in maintenance mode, whilst Enhancesoft is focusing on a complete rewrite of the code (v2.0). This means that release cycles and security updates for the legacy code have been significantly delayed."}]}],"credits":[{"lang":"en","value":"Mario Valiente","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-16T16:18:00.355878Z","id":"CVE-2026-9507","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-16T16:18:10.713Z"}}]}}