EUVD-2026-67198
GHSA-5pc3-v4c3-6pv4
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Network-accessible stored XSS requiring victim interaction (UI:R); no attacker authentication needed (PR:N); scope changes to victim's browser context (S:C) with high confidentiality impact from token theft.
Primary rating from Vendor (vmware).
CVSS VectorVendor: vmware
Lifecycle Timeline
2DescriptionCVE.org
Spring Authorization Server's default consent page renders user-controlled values without HTML entity encoding. When using the DefaultConsentPage, an attacker can craft an OAuth2 authorization request containing a malicious value that is stored server-side and later rendered unencoded in the default consent page presented to the end user. Spring Authorization Server 1.5.0 - 1.5.8 Spring Authorization Server 1.4.0 - 1.4.11
AnalysisAI
Stored cross-site scripting in Spring Authorization Server's DefaultConsentPage allows network-accessible, unauthenticated attackers to inject arbitrary JavaScript into the OAuth2 consent screen presented to legitimate users. Affected versions span 1.4.0-1.4.11 and 1.5.0-1.5.8; the attack payload is embedded in a crafted OAuth2 authorization request, persisted server-side, and executed in the victim's browser when they view the consent dialog. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The vulnerable code path is activated only when the application uses Spring Authorization Server's DefaultConsentPage; deployments that have implemented any custom consent page are entirely unaffected. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 8.2 (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N) accurately models the attack surface: no authentication or special network position is required to plant the payload, complexity is low, and the scope change (S:C) reflects JavaScript execution in the victim's browser rather than the server process itself. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Consult the vendor advisory at https://spring.io/security/cve-2026-59316 for confirmed patched release versions; exact fixed version numbers are not present in the available intelligence and have not been independently verified. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all Spring Authorization Server deployments to identify affected versions (1.4.0-1.4.11, 1.5.0-1.5.8) and immediately disable DefaultConsentPage by implementing a custom consent form or restricting OAuth2 endpoint access via network ACLs. …
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External POC / Exploit Code
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