FortiMail: authorization bypass

FortiMail

An Incorrect Authorization vulnerability in FortiMail may allow an unauthenticated remote attacker to obtain an authenticated IBE webmail session as any IBE recipient and read or send their encrypted mail via crafted HTTP requests.

Do this now

Check the vendor advisory for a fix to FortiMail and restrict internet access to its IBE webmail meanwhile.

Who should check: teams running VPN & firewalls

First seen: 10 Nov 2026
Last update: 10 Nov 2026, 20:20 UTC
Source: news
On the menu as: VPN & firewalls

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## FortiMail: authorization bypass
Severity: unknown. Patch status: fix status unknown.
Affected: FortiMail

An Incorrect Authorization vulnerability in FortiMail may allow an unauthenticated remote attacker to obtain an authenticated IBE webmail session as any IBE recipient and read or send their encrypted mail via crafted HTTP requests.

## Steps
1. This touches infrastructure (vpn-edge). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.
2. No source names a fix yet; check the vendor advisory. Until one ships: restrict network access to it.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://fortiguard.fortinet.com/psirt/FG-IR-26-208 https://fortiguard.fortinet.com/psirt/FG-IR-26-204 https://fortiguard.fortinet.com/psirt/FG-IR-26-211 https://fortiguard.fortinet.com/psirt/FG-IR-26-207
https://pwned.coffee/i/fortimail-authorization-bypass-2

Timeline

10 Nov 2026, 20:17 UTC
Reported by fortiguard.fortinet.com: Authorization bypass through user-controlled key
10 Nov 2026, 20:17 UTC
Reported by fortiguard.fortinet.com: Authorization bypass through user-controlled key
10 Nov 2026
First reported.

Receipt

Exploitation: No known exploitation
Score: No CVSS published yet: severity unknown.
Last checked: 13 Nov 2026, 16:26 UTC

Sources: KEV – CVE record – Vendor –

Sources

Follow on X

Totalone coffee