Copyright © 2012 Red Hat, Inc. All rights reserved. Important 2026-08-24T00:45:08 libwebsockets: libwebsockets: Out-of-bounds write in LECP CBOR Recording 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CWE-787

A vulnerability was found in warmcat libwebsockets 4.5.0. Impacted is the function report_raw_cbor of the file lib/misc/lecp.c of the component LECP CBOR Recording. The manipulation results in out-of-bounds write. The attack can be launched remotely. The exploit has been made public and could be used. The patch is identified as 1d44554a1bb262db63ff4e240152a9deecd99054. It is best practice to apply a patch to resolve this issue.

A flaw was found in warmcat libwebsockets. A remote attacker could exploit an out-of-bounds write vulnerability in the LECP CBOR Recording component, specifically within the `report_raw_cbor` function. This could lead to information disclosure, data corruption, or denial of service.

A vulnerability was found in libwebsockets 4.5.0 only. This vulnerability in libwebsockets, an out-of-bounds write in the LECP CBOR Recording component, does not affect Red Hat products. The vulnerable code is not present in the versions of libwebsockets shipped with Red Hat offerings. A-MQ Interconnect 1 Not affected libwebsockets Red Hat OpenStack Platform 16.2 Not affected libwebsockets Red Hat OpenStack Platform 17.1 Not affected libwebsockets Red Hat Satellite 6 Not affected libwebsockets Red Hat Service Interconnect 2 Not affected libwebsockets https://www.cve.org/CVERecord?id=CVE-2026-78161 https://nvd.nist.gov/vuln/detail/CVE-2026-78161 https://github.com/biniamf/pocs/blob/main/libwebsockets-lecp-lecp_parse-cbor_pos_oob_write/poc_lecp_cbor_pos_oob.c https://github.com/biniamf/pocs/tree/main/libwebsockets-lecp-lecp_parse-cbor_pos_oob_write https://github.com/warmcat/libwebsockets/ https://github.com/warmcat/libwebsockets/commit/1d44554a1bb262db63ff4e240152a9deecd99054 https://vuldb.com/cve/CVE-2026-78161 https://vuldb.com/submit/883225 https://vuldb.com/vuln/394543 https://vuldb.com/vuln/394543/cti