CVE-2021-22113
Incorrect Authorization in Spring Cloud Netflix Zuul
Applications using the “Sensitive Headers” functionality in Spring Cloud Netflix Zuul 2.2.6.RELEASE and below may be vulnerable to bypassing the “Sensitive Headers” restriction when executing requests with specially constructed URLs. Applications that use Spring Security's StrictHttpFirewall (enabled by default for all URLs) are not affected by the vulnerability, as they reject requests that allow bypassing.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Applications using the “Sensitive Headers” functionality in Spring Cloud Netflix Zuul 2.2.6.RELEASE and below may be vulnerable to bypassing the “Sensitive Headers” restriction when executing requests with specially constructed URLs. Applications that use Spring Security's StrictHttpFirewall (enabled by default for all URLs) are not affected by the vulnerability, as they reject requests that allow bypassing.
- Record
CVE-2021-22113- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
CVE List No score
Applications using the “Sensitive Headers” functionality in Spring Cloud Netflix Zuul 2.2.6.RELEASE and below may be vulnerable to bypassing the “Sensitive Headers” restriction when executing requests with specially constructed URLs. Applications that use Spring Security's StrictHttpFirewall (enabled by default for all URLs) are not affected by the vulnerability, as they reject requests that allow bypassing.
- Record
CVE-2021-22113- Updated
- 2026-11-02
EUVDEUVD-2021-1208 No score
Applications using the “Sensitive Headers” functionality in Spring Cloud Netflix Zuul 2.2.6.RELEASE and below may be vulnerable to bypassing the “Sensitive Headers” restriction when executing requests with specially constructed URLs. Applications that use Spring Security's StrictHttpFirewall (enabled by default for all URLs) are not affected by the vulnerability, as they reject requests that allow bypassing.
- Record
EUVD-2021-1208- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vwpg-f6gw-rjvf No score
Incorrect Authorization in Spring Cloud Netflix Zuul
Applications using the “Sensitive Headers” functionality in Spring Cloud Netflix Zuul 2.2.6.RELEASE and below may be vulnerable to bypassing the “Sensitive Headers” restriction when executing requests with specially constructed URLs. Applications that use Spring Security's StrictHttpFirewall (enabled by default for all URLs) are not affected by the vulnerability, as they reject requests that allow bypassing.
- Record
GHSA-vwpg-f6gw-rjvf- Weakness
- CWE-863
- Updated
- 2026-11-02
OSVGHSA-vwpg-f6gw-rjvf No score
Incorrect Authorization in Spring Cloud Netflix Zuul
Applications using the “Sensitive Headers” functionality in Spring Cloud Netflix Zuul 2.2.6.RELEASE and below may be vulnerable to bypassing the “Sensitive Headers” restriction when executing requests with specially constructed URLs. Applications that use Spring Security's StrictHttpFirewall (enabled by default for all URLs) are not affected by the vulnerability, as they reject requests that allow bypassing.
- Record
GHSA-vwpg-f6gw-rjvf- Weakness
- CWE-863
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.springframework.cloud:spring-cloud-netflix-zuulMaven |
before 2.2.7 | 2.2.7 |
org.springframework.cloud:spring-cloud-netflix-zuulMaven |
before 2.2.7, plus listed versions 2.0.0.RELEASE2.0.1.RELEASE2.0.2.RELEASE2.0.3.RELEASE2.0.4.RELEASE Show 14 moreShow less2.1.0.RELEASE2.1.1.RELEASE2.1.2.RELEASE2.1.3.RELEASE2.1.4.RELEASE2.1.5.RELEASE2.1.6.RELEASE2.2.0.RELEASE2.2.1.RELEASE2.2.2.RELEASE2.2.3.RELEASE2.2.4.RELEASE2.2.5.RELEASE2.2.6.RELEASE |
2.2.7 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-22113 is a medium vulnerability (CVSS 5.3) in Vmware Spring Cloud Netflix Zuul, published February 23, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.85%, the 58th percentile. Fixed in org.springframework.cloud:spring-cloud-netflix-zuul 2.2.7.