TI-2018-16053 Aliases CVE-2018-1000831 GHSA-68hq-qrc4-w5h8

K9Mail version <= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV…

MEDIUM 47CWE-611Published 2018-12-20 · Updated 2024-09-16

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

K9Mail version <= v5.600 contains a XML External Entity (XXE) vulnerability in WebDAV response parser that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via malicious WebDAV server or intercept the reponse of a valid WebDAV server.

Why it matters now

EPSS 0.01909 79th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:k9mail:k-9_mail::::::::	up to 5.600	Vulnerable	K9mail

cpe:2.3:a:k9mail:k-9_mail:*:*:*:*:*:*:*:* Versions up to 5.600 Vulnerable ·K9mail

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-1000831
2026-10-03 Alias added: GHSA-68hq-qrc4-w5h8

References

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences