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Back to active CVEs
High · CVSS 8.7CVE-2026-114198

Deserialization of untrusted data in flossCVE-2026-114198

Answer in brief

CVE-2026-114198 records a High severity (CVSS 8.7) vulnerability in Deserialization of untrusted data in floss. The current sources do not mark it as known exploited. The current feed maps Mandiant FLARE/floss (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 Oct 21, 2026Updated Oct 21, 2026Source checked Oct 21, 2026First seen by HOL Oct 21, 2026Material review Oct 21, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.7
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.7. 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 Mandiant FLARE/floss (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Mandiant FLARE/flossgeneric>=0 <3.2.03.2.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Mandiant FLARE/floss.
  2. 2Review the reported fix. Update Mandiant FLARE/floss to 3.2.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 21, 2026

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

  2. Source modified

    Oct 21, 2026

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

  3. First seen by HOL

    Oct 21, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
Upstream source description

Deserialization of untrusted data in Mandiant FLARE floss releases before 3.2.0 allows arbitrary code execution when a crafted .viv or .exe.viv workspace is passed to the floss utility

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Deserialization of untrusted data in capaAlso CWE-502
  • Duplicator <= 1.5.17 and Duplicator Pro <= 4.6.10 - Unauthenticated PHP Object InjectionAlso CWE-502

Record context

Vulnerability class
Deserialization
EPSS
Not reported
CWE IDs
CWE-502
Source
CVE List V5
Source checked
Oct 21, 2026
References
1 linked source
Open source record