High severity · published Aug 27, 2026
CVE-2026-59316
Spring Authorization Server Default Consent Page is vulnerable to Cross-Site Scripting (XSS)
8.2
CVSS
0.3%
EPSS
No
On KEV
Description
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
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
Spring Authorization Server · Spring
1.5.0 through 1.5.8; 1.4.0 through 1.4.11 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59316
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59316
Vendor Advisory
https://spring.io/security/cve-2026-59316
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