# CVE-2026-114426: Pre-authentication upload parsing permits resource exhaustion

- Exploited (CISA KEV): no
- Published: 2026-11-04
- CVSS: 8.7 HIGH (v4.0)
- EPSS: no score
- CWE: CWE-400

SEPPmail Secure Email Gateway before 15.1.1 processes and writes v1 file-interface upload data before authenticating the caller and without an absolute request-size limit. An unauthenticated remote attacker can occupy workers and consume temporary storage with concurrent or slow requests, causing service unavailability.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | No public claim | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | No public claim | — | — |
| Vercel | No public claim | — | — |
| F5 | No public claim | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

## Social

1 posts seen since 2026-11-04.

- bluesky 2026-11-04: CVE-2026-114426 - Pre-authentication upload parsing permits resource exhaustion CVE ID : CVE-2026-114426    Published : Nov. 4, 2026, 8:33 a.m. \| 31 minutes ago    Description : SEPPmail Secure Email Gateway before 15.1.1 processes and writes v1 file-interface upload data befo... (https://bsky.app/profile/cve.skyfleet.blue/post/gjxwm3rmqwegb)

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2026-114426 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2026-114426