CVE-2026-78161CWE-119CWE-787

CVE-2026-78161

High · published August 24, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
33.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00405 · 33.7th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-787 · Out-of-bounds Write
Published
2026-08-24T05:16Z
References (8)
https://github.com/biniamf/pocs/blob/main/libwebsockets-lecp-lecp_parse-cbor_pos_oob_write/poc_lecp_cbor_pos_oob.c · [email protected]https://github.com/biniamf/pocs/tree/main/libwebsockets-lecp-lecp_parse-cbor_pos_oob_write · [email protected]https://github.com/warmcat/libwebsockets/ · [email protected]https://github.com/warmcat/libwebsockets/commit/1d44554a1bb262db63ff4e240152a9deecd99054 · [email protected]https://vuldb.com/cve/CVE-2026-78161 · [email protected]https://vuldb.com/submit/883225 · [email protected]https://vuldb.com/vuln/394543 · [email protected]https://vuldb.com/vuln/394543/cti · [email protected]
EPSS history
Timeline
  • 24 AUG 00:45Z
    warmcat libwebsockets LECP CBOR Recording lecp.c report_raw_cbor out-of-bounds write
    cvelistv5