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Back to active CVEs
Critical · CVSS 9.8CVE-2026-54337

Fireshare has Unauthenticated Argument Injection to Arbitrary File Write/OverwriteCVE-2026-54337

Answer in brief

CVE-2026-54337 records a Critical severity (CVSS 9.8) vulnerability in Fireshare has Unauthenticated Argument Injection to Arbitrary File Write/Overwrite. The current sources do not mark it as known exploited. The current feed maps ShaneIsrael/fireshare (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 Sep 15, 2026Updated Sep 30, 2026Source checked Oct 31, 2026First seen by HOL Sep 15, 2026Material review Sep 30, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 9.8. 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 ShaneIsrael/fireshare (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
ShaneIsrael/firesharegeneric<1.6.141.6.14

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for ShaneIsrael/fireshare.
  2. 2Review the reported fix. Update ShaneIsrael/fireshare to 1.6.14 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 15, 2026

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

  2. Source modified

    Sep 30, 2026

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

  3. First seen by HOL

    Sep 15, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
Upstream source description

Fireshare facilitates self-hosted media and link sharing. Prior to version 1.6.14, an argument Injection in the video upload function allows unauthenticated attacker to write/overwrite system files. Version 1.6.14 fixes the issue.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-88
Source
CVE List V5
Source checked
Oct 31, 2026
References
1 linked source
Open source record