CVE-2026-35095

KTM System e-BOK allows the session identifier to be set by the client prior to authentication. If a cookie with a valid name is set, its value remains unchanged after successful login. This behaviour enables an attacker to fix a session ID for a victim and later hijack the authenticated session. This issue was fixed in the patch published in June 2026.

CVSS

No CVSS.

References

Link	Resource
https://cert.pl/posts/2026/06/CVE-2026-35095/
https://ktmsystem.pl/internetowe-biuro-obslugi-klienta/

Configurations

No configuration.

History

30 Jun 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-30 14:16

Updated : 2026-06-30 15:16

NVD link : CVE-2026-35095

Mitre link : CVE-2026-35095

CVE.ORG link : CVE-2026-35095

JSON object : View

Products Affected

No product.

CWE

CWE-384

Session Fixation

{"id": "CVE-2026-35095", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-35095", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-30T14:42:36.409765Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "cvd@cert.pl", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 4.8, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "PASSIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "cvd@cert.pl", "affectedData": [{"vendor": "KTM System", "modules": ["e-BOK"], "product": "e-BOK", "versions": [{"status": "affected", "version": "0", "lessThan": "06.2026", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-06-30T14:16:26.283", "references": [{"url": "https://cert.pl/posts/2026/06/CVE-2026-35095/", "source": "cvd@cert.pl"}, {"url": "https://ktmsystem.pl/internetowe-biuro-obslugi-klienta/", "source": "cvd@cert.pl"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "cvd@cert.pl", "description": [{"lang": "en", "value": "CWE-384"}]}], "descriptions": [{"lang": "en", "value": "KTM System e-BOK allows the session identifier to be set by the client prior to authentication. If a cookie with a valid name is set, its value remains unchanged after successful login. This behaviour enables an attacker to fix a session ID for a victim and later hijack the authenticated session.\n\nThis issue was fixed in the patch published in June 2026."}], "lastModified": "2026-06-30T15:16:54.477", "sourceIdentifier": "cvd@cert.pl"}

CVE-2026-35095

JSON object

Attach tags to CVE-2026-35095

Attach tags to `CVE-2026-35095`