CVE-2026-49846 — libks has path traversal in kws HTTP parser via URI segment overflow

CVE-2026-49846

libks has path traversal in kws HTTP parser via URI segment overflow PUBLISHED

Description (CNA)

libks provides foundational support for signalwire C products. Prior to version 2.0.11, `clean_uri()` in libks's HTTP request parser fails to reject URIs whose path has more segments than its internal canonicalization buffer can hold. The canonicalization step silently passes such URIs through with embedded ".." sequences intact, enabling path traversal in any consumer that later joins the URI with a filesystem path. Version 2.0.11 patches the issue.

Affected (CNA)

Vendor / product	Versions
signalwire / libks	affected < 2.0.11

CWE

CWE-22, CWE-697

References

https://github.com/signalwire/libks/security/advisories/GHSA-684h-wjm9-2p6j

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.