Read the docs
TI-2026-54362 Aliases CVE-2026-78161GHSA-83xp-6qr9-g946

warmcat libwebsockets LECP CBOR Recording lecp.c report_raw_cbor out-of-bounds write

Priority HIGH 70CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00405 35th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
warmcatlibwebsockets4.5.0—No fix listedCNA
  • libwebsockets Vendorwarmcat Affected 4.5.0 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:warmcat:libwebsockets:*:*:*:*:*:*:*:*——warmcat
  • cpe:2.3:a:warmcat:libwebsockets:*:*:*:*:*:*:*:* Versions — — ·warmcat

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 5 products
  • A-MQ Interconnect 1
  • Red Hat OpenStack Platform 16.2
  • Red Hat OpenStack Platform 17.1
  • Red Hat Satellite 6
  • Red Hat Service Interconnect 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-78161
  2. 2026-10-03 Alias added: GHSA-83xp-6qr9-g946

References

Exploit 2

Patch 1

Other 1

  • TI-2026-09152 warmcat libwebsockets SSH Protocol sshd.c lws_ssh_parse_plaintext resource consumption CVSS 4.0MEDIUM 6.9
  • TI-2025-01611 Undefined Behavior Due to Out-of-Bounds Pointer Arithmetic in libwebsockets CVSS 4.0CRITICAL 10.0
  • TI-2025-10708 Stack-based Buffer Overflow in libwebsockets DNS response parsing CVSS 4.0HIGH 7.5
  • TI-2025-10707 Use After Free in libwebsockets WebSocket server CVSS 4.0MEDIUM 6.3
  • TI-2025-10710 Out-of-bounds Write in libwebsockets PNG parsing CVSS 4.0MEDIUM 5.9
  • TI-2025-10709 Out-of-bounds Read in libwebsockets PNG parsing CVSS 4.0MEDIUM 5.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences