Memory Growth Vulnerability in Valhalla Open Source Routing Engine
CVE-2026-54716

7.5HIGH

Key Information:

Vendor

Valhalla

Status
Valhalla
Vendor
CVE Published:
17 September 2026

What is CVE-2026-54716?

The Valhalla open source routing engine is susceptible to a vulnerability where a maliciously crafted POST request containing an exclude_polygons ring formed by three collinear points can trigger unbounded memory growth in the worker process. This flaw arises in versions 3.7.0 and earlier and allows an unauthenticated attacker to send a single request, leading to termination of the worker by the out-of-memory killer. Notably, endpoints such as /route which accept exclude_polygons have not been confirmed as affected. As of now, there is no available patch for this issue.

Affected Version(s)

valhalla <= 3.7.0

References

https://github.com/valhalla/valhalla/security/advisories/...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.