by Kastro
Paper/Archive/CVE-2026-1306

CVE-2026-1306

adminkov midi-Synth — midi-Synth <= 1.1.0 - Unauthenticated Arbitrary File Upload via 'export' AJAX Action

EPSS 5%CVSS 9.8
critical.is priorityof 100
48
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 92.0.920 × 2018.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

The midi-Synth plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type and file extension validation in the 'export' AJAX action in all versions up to, and including, 1.1.0. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible granted the attacker can obtain a valid nonce. The nonce is exposed in frontend JavaScript making it trivially accessible to unauthenticated attackers.

Affected

ProductAffectedFixed inSource
midi-Synth≤ 1.1.0–CNA

Scores by source

Wordfence (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refwordfence.com/threat-intel/vulnerabilities/id/d5b695d7-c690-4748-b218-5699d1aa63bf?source=cverefplugins.trac.wordpress.org/browser/midi-synth/tags/1.1.0/midiSynthConvert.php#L421refplugins.trac.wordpress.org/browser/midi-synth/tags/1.1.0/midiSynthConvert.php#L492refplugins.trac.wordpress.org/browser/midi-synth/tags/1.1.0/midiSynth.php#L121refplugins.trac.wordpress.org/browser/midi-synth/tags/1.1.0/midiSynth.php#L110refplugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3460788%40midi-synth&new=3460788%40midi-synth&sfp_email=&sfph_mail=