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VulnerabilityPublished Updated

CVE-2026-1358: Airleader Master · Unrestricted File Upload

Affects Airleader MasterSource CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.2% chance of exploitation in 30 days – higher than 68% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Airleader GmbHAirleader MasterAffected
  • <=6.381
Fixed in–

AI-suggested

  1. Immediately restrict network access to Airleader Master web interfaces to trusted internal networks only, using firewalls and access control lists.
  2. Implement strict file upload validation controls at the web server or application layer, including whitelisting allowed file types and scanning uploads for malware.
  3. Employ network segmentation to isolate Airleader Master servers from general IT networks and the internet to reduce exposure.
  4. Monitor logs and network traffic for unusual file upload activity or unauthorized access attempts.
  5. Apply any vendor-provided patches or updates as soon as they become available.
  6. If patches are not yet available, consider temporary mitigations such as disabling file upload functionality or deploying web application firewalls (WAFs) with custom rules to block suspicious uploads.
  7. Conduct security awareness training for administrators managing Airleader Master systems to recognize and respond to potential exploitation attempts.
  8. Regularly back up critical configurations and data to enable recovery in case of compromise.

Description

Airleader Master versions 6.381 and prior allow for file uploads without restriction to multiple webpages running maximum privileges. This could allow an unauthenticated user to potentially obtain remote code execution on the server.

References

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