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NVD / CVE Program· CNA vmware

CVE-2021-22051: Applications using Spring Cloud Gateway are vulnerable to specifically crafted requests that could make an extra request on downstream…

MediumCVSS 6.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 26/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.67% (FIRST EPSS); higher than 52.5% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: org.springframework.cloud:spring-cloud-gateway (Maven) 2.2.10.RELEASE0.5, 3.0.5.

Low priority for now. Upgrade to org.springframework.cloud:spring-cloud-gateway (Maven) 2.2.10.RELEASE0.5, 3.0.5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Applications using Spring Cloud Gateway are vulnerable to specifically crafted requests that could make an extra request on downstream services. Users of affected versions should apply the following mitigation: 3.0.x users should upgrade to 3.0.5+, 2.2.x users should upgrade to 2.2.10.RELEASE or newer.

Published
Nov 8, 2021
Updated
Jun 16, 2026
EPSS
0.6% · 52th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-22051

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
vmwarespring cloud gateway

Versions reported by the vendor

Affected version ranges reported by the assigning authority (vmware). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a Spring Cloud Gateway

    • 3.0.0 to 3.0.4, 2.2.0.RELEASE to 2.2.9.RELEASE, and older versionsaffected

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • vmware spring cloud gatewaybefore 2.2.10
  • vmware spring cloud gateway3.0.0 and later · before 3.0.5

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Mavenorg.springframework.cloud:spring-cloud-gatewayfrom 2.2.0 · before 2.2.10.RELEASE0.52.2.10.RELEASE0.5
Mavenorg.springframework.cloud:spring-cloud-gatewayfrom 3.0.0 · before 3.0.53.0.5

Same product

vmware: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-22947In spring cloud gateway versions prior to 3.1.1+ and 3.0.7+ , applications are vulnerable to a code injection attack when the Gateway…KEV
    99Now
  • CVE-2026-47879Spring Cloud Gateway SSRF and native file access with gRPC
    34Monitor
  • CVE-2026-47825Spring Cloud Gateway Server Forwards Headers from Untrusted Proxies in certain situations
    34Monitor

Published before and after this one in the same product

  • Later →CVE-2022-22946Mar 4, 2022 · In spring cloud gateway versions prior to 3.1.1+ , applications that are configured to enable HTTP2 and no key store or trusted…
    23Monitor
  • Later →CVE-2025-41235May 30, 2025 · CVE-2025-41235: Spring Cloud Gateway Server Forwards Headers from Untrusted Proxies
    34Monitor
  • Later →CVE-2026-22750Apr 10, 2026 · SSL bundle configuration silently bypassed in Spring Cloud Gateway
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Maven:org.springframework.cloud:spring-cloud-gateway2.2.10.RELEASE0.5Package registry (OSV)
Maven:org.springframework.cloud:spring-cloud-gateway3.0.5Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-863 · Incorrect Authorization

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records