CVE catalog

CVE-2026-95115

Buffer Overflow vulnerability in libwebsockets main 106d542c allows a remote attacker to cause a denial of service via the LEJP JSON parser

[CVE catalog]

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Oct 13, 2026, 12:00:00 AM UTC
Updated: Oct 13, 2026, 3:17:51 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.55% · Oct 25, 2026

Buffer Overflow vulnerability in libwebsockets main 106d542c allows a remote attacker to cause a denial of service via the LEJP JSON parser

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libwebsockets	sid	`4.3.5-7`	vulnerable
Debian	libwebsockets	forky	`4.3.5-7`	vulnerable
Debian	libwebsockets	trixie	`4.3.5-1+deb13u2`	vulnerable
Debian	libwebsockets	trixie-security	`4.3.5-1+deb13u3`	vulnerable
Debian	libwebsockets	bookworm	`4.1.6-3`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libwebsockets	source	sid	`(unfixed)`	not yet assigned	Not reported	[1150938]
Debian	libwebsockets	source	forky	`(unfixed)`	not yet assigned	Not reported	[1150938]
Debian	libwebsockets	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1150938]
Debian	libwebsockets	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1150938]

[Debian bug #1150938]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libwebsockets17]Affected
Source package: [libwebsockets]
Details (2)
- 4.1.6-3 · amd64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
- 4.1.6-3 · arm64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
[libwebsockets-dev]Affected
Source package: [libwebsockets]
Details (2)
- 4.1.6-3 · amd64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
- 4.1.6-3 · arm64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
[libwebsockets-evlib-ev]Affected
Source package: [libwebsockets]
Details (2)
- 4.1.6-3 · amd64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
- 4.1.6-3 · arm64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
[libwebsockets-evlib-glib]Affected
Source package: [libwebsockets]
Details (2)
- 4.1.6-3 · amd64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
- 4.1.6-3 · arm64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
[libwebsockets-evlib-uv]Affected
Source package: [libwebsockets]
Details (2)
- 4.1.6-3 · amd64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
- 4.1.6-3 · arm64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
[libwebsockets-test-server]Affected
Source package: [libwebsockets]
Details (2)
- 4.1.6-3 · amd64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
- 4.1.6-3 · arm64 · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
[libwebsockets-test-server-common]Affected
Source package: [libwebsockets]
Details (2)
- 4.1.6-3 · all · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12
- 4.1.6-3 · all · bookworm
  Affected
  nvd · libwebsockets · debian · bookworm; nvd · libwebsockets · debian · 12

[Debian 13 (Trixie)]

[libwebsockets19t64]Affected
Source package: [libwebsockets]
Details (3)
- 4.3.5-1+deb13u1 · amd64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u1 · arm64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u3 · amd64 · trixie-security
  Affected
  nvd · libwebsockets · debian · 13
[libwebsockets-dev]Affected
Source package: [libwebsockets]
Details (3)
- 4.3.5-1+deb13u1 · amd64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u1 · arm64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u3 · amd64 · trixie-security
  Affected
  nvd · libwebsockets · debian · 13
[libwebsockets-evlib-ev]Affected
Source package: [libwebsockets]
Details (3)
- 4.3.5-1+deb13u1 · amd64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u1 · arm64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u3 · amd64 · trixie-security
  Affected
  nvd · libwebsockets · debian · 13
[libwebsockets-evlib-glib]Affected
Source package: [libwebsockets]
Details (3)
- 4.3.5-1+deb13u1 · amd64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u1 · arm64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u3 · amd64 · trixie-security
  Affected
  nvd · libwebsockets · debian · 13
[libwebsockets-evlib-uv]Affected
Source package: [libwebsockets]
Details (3)
- 4.3.5-1+deb13u1 · amd64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u1 · arm64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u3 · amd64 · trixie-security
  Affected
  nvd · libwebsockets · debian · 13
[libwebsockets-test-server]Affected
Source package: [libwebsockets]
Details (3)
- 4.3.5-1+deb13u1 · amd64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u1 · arm64 · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u3 · amd64 · trixie-security
  Affected
  nvd · libwebsockets · debian · 13
[libwebsockets-test-server-common]Affected
Source package: [libwebsockets]
Details (3)
- 4.3.5-1+deb13u1 · all · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u1 · all · trixie
  Affected
  nvd · libwebsockets · debian · 13
- 4.3.5-1+deb13u3 · all · trixie-security
  Affected
  nvd · libwebsockets · debian · 13

Observed: Oct 27, 2026, 4:45:18 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]