Unencoded HTML Outputs in Spring Security May Allow Cross-Site Scripting
CVE-2026-41003

7.6HIGH

Key Information:

Vendor

Spring

Status
Spring Security
Vendor
CVE Published:
9 June 2026

What is CVE-2026-41003?

An attacker able to influence values in RelyingPartyRegistration may be able to run arbitrary code on HTML forms generated by Spring Security filters.

Affected versions: Spring Security 5.7.0 through 5.7.23; 5.8.0 through 5.8.25; 6.3.0 through 6.3.16; 6.4.0 through 6.4.16; 6.5.0 through 6.5.10; 7.0.0 through 7.0.5.

Affected Version(s)

Spring Security 5.7.0 < 5.7.24

Spring Security 5.8.0 < 5.8.26

Spring Security 6.3.0 < 6.3.17

References

https://spring.io/security/cve-2026-41003

CVSS V3.1

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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