CVE-2021-22119

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-06-29 · updated 2026-06-17
Weakness: CWE-400

Description

Spring Security versions 5.5.x prior to 5.5.1, 5.4.x prior to 5.4.7, 5.3.x prior to 5.3.10 and 5.2.x prior to 5.2.11 are susceptible to a Denial-of-Service (DoS) attack via the initiation of the Authorization Request in an OAuth 2.0 Client Web and WebFlux application. A malicious user or attacker can send multiple requests initiating the Authorization Request for the Authorization Code Grant, which has the potential of exhausting system resources using a single session or multiple sessions.

Affected products

Oracle Communications Cloud Native Core Policy: 1.14.0
Spring Security: from 5.2.0 before 5.2.11; from 5.3.0 before 5.3.10; from 5.4.0 before 5.4.7; from 5.5.0 before 5.5.1 — fixed in 5.2.11, 5.3.10, 5.4.7, 5.5.1
Spring Security: from Spring Security versions 5.5.x prior through 5.5.1, 5.4.x prior to 5.4.7, 5.3.x prior to 5.3.10 and 5.2.x prior to 5.2.11

How to fix

Upgrade to a fixed version: Spring Security 5.2.11, 5.3.10, 5.4.7, 5.5.1. Check the vendor advisory for mitigations.

References

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