# CVE-2026-114420: SEPPmail Secure Email Gateway LDAP injection in account selection

Source: https://junglewise.ai/threats/cve-2026-114420-seppmail-secure-email-gateway-before-15-1-1-does-not-neutralize  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-04. Updated: 2026-11-04  
License: CC BY 4.0 with a link back

CVE-2026-114420 · Severity: info · Published 2026-11-04

SEPPmail Secure Email Gateway is a mail security appliance that filters and protects email communications. The GINA web interface allows unauthenticated users to look up email accounts, but fails to properly escape LDAP metacharacters in search input. An attacker can exploit this to enumerate valid email addresses in the system without authentication.

Technologies: [Seppmail Secure Email Gateway](https://junglewise.ai/threats/technologies/seppmail-secure-email-gateway). Vendors: [Seppmail](https://junglewise.ai/threats/vendors/seppmail).

## Quick answers

**Is CVE-2026-114420 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-114420 being exploited in the wild.

**How severe is CVE-2026-114420?** Informational severity, published 4 November 2026.

**Which products and versions are affected?** Seppmail Secure Email Gateway before 15.1.1.

**Is there a fix for CVE-2026-114420?** Yes: fixed in 15.1.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-114420 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-114420?** Check whether you run Seppmail Secure Email Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 15.1.1

## Technical details

LDAP injection vulnerability in the unauthenticated account-selection input of the GINA web interface due to insufficient neutralization of LDAP metacharacters. An attacker can craft malicious LDAP filter syntax to perform account enumeration without credentials. The fix in version 15.1.1 involves proper escaping of LDAP filter values.

## Affected products

- SEPPmail Secure Email Gateway before 15.1.1

## Timeline

- 2026-11-04: disclosed
- 2026-10-27: patched

## References

- [https://docs.seppmail.com/en/20_revision-history.html](https://docs.seppmail.com/en/20_revision-history.html)

## Related threats

- [SEPPmail Secure Email Gateway file-interface DoS before authentication](https://junglewise.ai/threats/cve-2026-114426-seppmail-secure-email-gateway-before-15-1-1-processes-and-writes)
- [SEPPmail Secure Email Gateway arbitrary file access via LFT metadata](https://junglewise.ai/threats/cve-2026-114425-seppmail-secure-email-gateway-before-15-1-1-trusts-a-file-path)
- [SEPPmail Secure Email Gateway code injection in address replacement rules](https://junglewise.ai/threats/cve-2026-114424-seppmail-secure-email-gateway-before-15-1-1-can-evaluate)
- [SEPPmail Secure Email Gateway password recovery bypass in GINA](https://junglewise.ai/threats/cve-2026-114421-seppmail-secure-email-gateway-before-15-1-1-permits-password)
- [SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to bypass subject sanitization and forge…](https://junglewise.ai/threats/cve-2026-29144-seppmail-secure-email-gateway-before-version-15-0-3-allows-an)