Path Traversal Vulnerability in SignalWire libks HTTP Request Parser
CVE-2026-49846

7.5HIGH

Key Information:

Vendor

Signalwire

Status
Libks
Vendor
CVE Published:
11 September 2026

What is CVE-2026-49846?

The libks library used in SignalWire products has a path traversal vulnerability due to its HTTP request parser's clean_uri() function. This function does not properly reject URIs that exceed the limit of its canonicalization buffer. As a result, such URIs can be processed with unsafe '..' sequences intact, potentially leading to unauthorized access to filesystem paths. This issue has been resolved in version 2.0.11, emphasizing the importance of updating to mitigate security risks.

Affected Version(s)

libks < 2.0.11

References

https://github.com/signalwire/libks/security/advisories/G...
x_refsource_CONFIRM

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.