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CVE-2021-22053 (GCVE-0-2021-22053)

Vulnerability from cvelistv5 – Published: 2021-11-19 15:56 – Updated: 2024-08-03 18:30
VLAI Shadowserver Previdian
Summary
Applications using both `spring-cloud-netflix-hystrix-dashboard` and `spring-boot-starter-thymeleaf` expose a way to execute code submitted within the request URI path during the resolution of view templates. When a request is made at `/hystrix/monitor;[user-provided data]`, the path elements following `hystrix/monitor` are being evaluated as SpringEL expressions, which can lead to code execution.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a Spring Cloud Netflix Affected: Spring Cloud Netflix versions 2.2.x prior to 2.2.10.Release + and old unsupported versions
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 6f51c4f0-0d01-4e79-b198-7e88eb0c814c

Vulnerability ID: CVE-2021-22053

Status: Confirmed

Status Updated: 2026-09-02 00:00 UTC

Exploited: Yes

Characteristics
Severity: 88.0
Timestamps
First Seen: 2023-10-14
Asserted: 2023-10-14
Last Seen: 2026-09-02
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Spring / Spring Cloud Netflix | Class: web-app-framework | Severity: High (CVSS 8.8) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-09-02: 6
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class web-app-framework
7D Avg 0
Vendor Spring
30D Avg 0
90D Avg 3
Product Spring Cloud Netflix
Cisa Kev no
Connections 6
Observation Date 2026-09-02
Vulnerability Class CVSS
Vulnerability Score 8.8
Vulnerability Severity High
References
Created: 2026-07-01 05:54 UTC | Updated: 2026-09-04 01:01 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 9b4abf57-60e3-4043-96c6-2cd0fe8730ad

Vulnerability ID: CVE-2021-22053

Status: Confirmed

Status Updated: 2025-08-21 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-08-21
Asserted: 2025-08-21
Scope
Notes: KEVIntel entry: Applications using both `spring-cloud-netflix-hystrix-dashboard` and `spring-boot-starter-thymeleaf` expose a way to execute code submitted within... | Affected: VMware / Spring Cloud Netflix Hystrix Dashboard | CVSS: 8.8 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Applications using both `spring-cloud-netflix-hystrix-dashboard` and `spring-boot-starter-thymeleaf` expose a way to execute code submitted within...
Vendor VMware
Product Spring Cloud Netflix Hystrix Dashboard
Added Date 2025-08-21T00:00:00.000Z
Cvss Score 8.8
Epss Score None
Cvss Severity HIGH
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 11:12 UTC | Updated: 2026-06-23 11:12 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.