Vulnerability

CVE-2026-100389

Descriptive record received from OpenCTI and minimised for consultation in the Intel portal.

Sharing: PUBLIC-OSINT
Confidence: 100
Source: The CVE Program
Updated: 26/09/2026 04:54

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.

STIX identifiervulnerability--fea2e1e3-7b61-5335-995a-32ae940cd430

First observation-

Last observation-

Known relationships7

Aliases and classifications

CWE-434Unrestricted Upload of File with Dangerous Type

Minimised technical details

No raw data

cisa kev: False
cvss score: 8.1
cvss vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss severity: HIGH

Provenance

Public references

release-notes
https://gestsup.fr/index.php
VulnCheck Advisory: GestSup before 3.2.61 Remote Code Execution via IMAP Attachment
https://www.vulncheck.com/advisories/gestsup-before-3.2.61-remote-code-execution-via-imap-attachment
product
https://gestsup.fr/index.php

EudorIA correlation

Intel catalogue

The vulnerability is also available in the EudorIA editorial catalogue.

Open EudorIA analysis

Presence in OpenCTI describes an intelligence correlation and does not, by itself, constitute evidence of compromise, legal attribution or operational guidance applicable without context verification.