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  4. CVE 2026 78161 warmcat libwebsockets lecp cbor recording lecpc
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Back to active CVEs
Medium · CVSS 7.3CVE-2026-78161

warmcat libwebsockets LECP CBOR Recording lecp.c report_raw_cbor out-of-bounds writeCVE-2026-78161

Answer in brief

CVE-2026-78161 records a Medium severity (CVSS 7.3) vulnerability in warmcat libwebsockets LECP CBOR Recording lecp.c report_raw_cbor out-of-bounds write. The current sources do not mark it as known exploited. The current feed maps warmcat/libwebsockets (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 24, 2026Updated Aug 24, 2026Source checked Oct 8, 2026First seen by HOL Aug 24, 2026Material review Aug 24, 2026
Upstream Advisory

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787, CWE-119
Source
CVE List V5
Source checked
Oct 8, 2026
References
8 linked sources
Open source record

Key facts

Risk
Medium · CVSS 7.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps warmcat/libwebsockets (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
warmcat/libwebsocketsgeneric4.5.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for warmcat/libwebsockets.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 24, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 24, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 24, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

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