EM-20261104-4HWV
VulnerabilityHigh severity
libwebsockets Vulnerability (CVE-2026-114550)
CVE-2026-114550
Status
Developing
Since : signals keep joining.
- First Signal
- Nov 03 23:47 UTCC41 Red Hat Security Data
- Page Born
- Nov 04 00:17 UTCsecond source joined
- Last Signal
- Nov 04 00:17 UTC17 hours before snapshot
- Sources
- 21 official · 1 research, news or crowd
- Open For
- 15 hoursso far
Life Of This Page
- 1BornA second, independent source names it.
- 2Developing · NowNew signals join; severity can move.
- 3ConfirmedNot yetCISA KEV lists it, or exploitation in the wild is reported.
- 4ResolvedNot yetPast the fix deadline and 14 days with no new signal.
- 5ArchivedNot yet30 days after resolved. Read only; the link keeps working. Reopens if it comes back.
The address and ID never change. A correction is logged, never overwritten. If two pages turn out to be one incident, the later one points to the earlier.
Vulnerability Lifecycle
- Disclosed: reachedNov 04 00:17 UTCC6 NVD published
- Scored: reachedNov 04 00:17 UTCCVSS 8.1 · EPSS 0.8%
- Exploited: not yetNot yetNo exploitation reported
- Advisories: not yetNot yetNone yet
- Vendor Response: reachedNov 03 23:47 UTCC41 published
- Resolved: not yetNot yetAfter 14 quiet days
Timeline
Point at a mark to read it. Squares are signals, colored by severity; every one is also listed under Signals.
Signals
- CVE-2026-114550 (CVSS 8.1) (opens source in a new tab) libwebsockets MQTT Protocol PUBACK Packet Handling Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets.… High severityDatabaseC6 NVD CVE API 2.0
- Red Hat: CVE-2026-114550 (important) (opens source in a new tab) libwebsockets: libwebsockets: arbitrary code execution via crafted MQTT PUBACK packets High severityVendorC41 Red Hat Security Data