Vulnary
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Critical· 9.1official fix available

CVE-2026-34745

Fireshare, a self‑hosted media sharing tool, had a flaw that let anyone upload files to any location on the server. The bug existed in the public upload endpoint before version 1.5.3. The vendor has released a patch that fixes the issue.

publishedApr 2, 2026
last modifiedJul 24, 2026
sourcesNVD
severity · cvss
9.1
critical · how bad it is
exploitation · epss
<1%
46th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Aug 25, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

shaneisrael fireshare, versions earlier than 1.5.3.

02

Real-world impact

An attacker could place malicious files anywhere on the server, potentially running code, stealing data, or disrupting services.

03

Why this severity

The CVSS score of 9.1 reflects that the flaw is exploitable without authentication, has low attack complexity, and can completely compromise the integrity and availability of the system.

04

What to do about it

official fix available
recommended steps
  1. 011. Upgrade Fireshare to version 1.5.3 or later.
  2. 022. Restart the Fireshare service to apply the update.

NVD-referenced vendor advisory

05

Timeline

  1. Apr 2, 2026 · Apr 2, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 24, 2026 · 12d ago
    Advisory updated
    The NVD record was last revised.
  3. Jul 26, 2026 · 10d ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactNone
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →