CVE-2018-15801

Authorization Bypass During JWT Issuer Validation with spring-security

HIGH
7.4
CVSS Score
Published: December 19, 2018 at 10:00 PM UTC
Updated: June 17, 2026 at 01:43 AM UTC
2 products affected across 2 vendorsSpring FrameworkSpring Framework

Using Spring Security by Spring by Pivotal?

Get instant alerts when new vulnerabilities affect Spring Security - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.4
Exploit prediction
EPSS 0.7%

Description

Spring Security versions 5.1.x prior to 5.1.2 contain an authorization bypass vulnerability during JWT issuer validation. In order to be impacted, the same private key for an honest issuer and a malicious user must be used when signing JWTs. In that case, a malicious user could fashion signed JWTs with the malicious issuer URL that may be granted for the honest issuer.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.1.0 ≤ v < 5.1.2
Affected range stops below 5.1.2, so it looks safe — our inference, not a vendor statement
5.1.x ≤ v < 5.1.25.1.x
Affected range stops below 5.1.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
https://pivotal.io/security/cve-2018-15801

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-345

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card