GestSup versions before 3.2.62 contain a remote code execution vulnerability in the basic IMAP connector's attachment handling that fails to skip blocked file extensions. Unauthenticated attackers can send emails with PHP attachments to monitored mailboxes, which are written to the web-accessible upload/ticket directory and executed when accessed.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Gestsup
  • Gestsup

No data.

No data.

References
Link Providers
https://blog.spiizn.xyz/articles/remote-code-execution-turning-a-ticket-into-a-new-issue/ cve-icon cve-icon
https://gestsup.fr/index.php?page=changelog cve-icon cve-icon
https://gestsup.fr/index.php?page=download cve-icon cve-icon
https://www.vulncheck.com/advisories/gestsup-before-3.2.61-remote-code-execution-via-imap-attachment cve-icon cve-icon
History

Wed, 30 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
Description GestSup versions before 3.2.61 contain a remote code execution vulnerability in the basic IMAP connector's attachment handling that fails to skip blocked file extensions. Unauthenticated attackers can send emails with PHP attachments to monitored mailboxes, which are written to the web-accessible upload/ticket directory and executed when accessed. GestSup versions before 3.2.62 contain a remote code execution vulnerability in the basic IMAP connector's attachment handling that fails to skip blocked file extensions. Unauthenticated attackers can send emails with PHP attachments to monitored mailboxes, which are written to the web-accessible upload/ticket directory and executed when accessed.
Title GestSup before 3.2.61 Remote Code Execution via IMAP Attachment GestSup before 3.2.62 Remote Code Execution via IMAP Attachment
References

Tue, 29 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Fri, 25 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Description GestSup versions before 3.2.61 contain a remote code execution vulnerability in the basic IMAP connector's attachment handling that fails to skip blocked file extensions. Unauthenticated attackers can send emails with PHP attachments to monitored mailboxes, which are written to the web-accessible upload/ticket directory and executed when accessed.
Title GestSup before 3.2.61 Remote Code Execution via IMAP Attachment
First Time appeared Gestsup
Gestsup gestsup
Weaknesses CWE-434
CPEs cpe:2.3:a:gestsup:gestsup:*:*:*:*:*:*:*:*
Vendors & Products Gestsup
Gestsup gestsup
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-25T20:13:07.623Z

Updated: 2026-09-30T11:15:12.444Z

Reserved: 2026-09-25T19:47:52.073Z

Link: CVE-2026-100389

cve-icon Vulnrichment

Updated: 2026-09-29T18:21:16.573Z

cve-icon NVD

Status : Deferred

Published: 2026-09-25T21:17:22.483

Modified: 2026-09-30T17:32:07.107

Link: CVE-2026-100389

cve-icon Redhat

No data.