Vulnerability record/PUBLISHED/Published Jul 8, 2026 13:49:02 UTC
CVE-2026-56359
n8n before 2.8.0 contains a cross-site scripting vulnerability in the credential management flow where authenticated users can inject malicious JavaScript URLs into OAuth2 credential Authorization URL fields. Attackers can craft malicious credentials and trick victims into clicking the OAuth authorization button, executing arbitrary scripts in their browser session with the victim's privileges.
Base score4.8/ 10
SeverityMediumCVSS 4.0
Exploitability / impact
CVSS metric breakdown
Base severityMedium
Attack vectorNetworkAV
Attack complexityLowAC
Attack requirementsNoneAT
Privileges requiredLowPR
User interactionActiveUI
Vulnerable system confidentialityLowVC
Vulnerable system integrityLowVI
Vulnerable system availabilityNoneVA
Subsequent system confidentialityLowSC
Subsequent system integrityLowSI
Subsequent system availabilityNoneSA
CVSS vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:NCVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.
Record context
CVE Numbering AuthorityVulnCheck
Last updatedOct 29, 2026 21:15:48 UTC
PublishedJul 8, 2026 13:49:02 UTC
ReservedJun 20, 2026 21:16:53 UTC
Credits
- yohannslm