Cross-Site Request Forgery Flaw in Locust by LocustIO
CVE-2026-111883

5.3MEDIUM

Key Information:

Vendor

Locustio

Status
Locust
Vendor
CVE Published:
19 October 2026

What is CVE-2026-111883?

Locust versions up to 2.46.7 are susceptible to a cross-site request forgery vulnerability that allows malicious attackers to disrupt ongoing load tests. By tricking an operator into visiting a crafted webpage, attackers can issue unauthorized GET requests to endpoints like /stop and /stats/reset. This can result in termination of active testing swarms and the loss of critical performance metrics. Users of Locust should ensure they implement protective measures against CSRF attacks, especially when managing load testing environments.

Affected Version(s)

locust 0 <= 2.46.7

References

https://github.com/locustio/locust/issues/3566
issue-tracking
https://github.com/locustio/locust/commit/3a1d0caa5bde594...
patch
https://github.com/locustio/locust/blob/2.46.7/locust/web.py
technical-description

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.