CVE-2025-25198: mailcow: dockerized is an open source groupware/email suite based on docker

Q: How do I fix CVE-2025-25198?

mailcow\: upgrade to 2025-01a. Exact commands for each OS are on this page.

Q: Is CVE-2025-25198 being exploited?

CVE-2025-25198 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-25198 affect?

CVE-2025-25198 affects mailcow\. Severity is high (CVSS 7.1). mailcow: dockerized is an open source groupware/email suite based on docker. Prior to version 2025-01a, a vulnerability in mailcow's password reset functionality allows an attacker to manipulate the `Host HTTP` header to generate a password

Q: How urgent is CVE-2025-25198?

Priority 51/100. High severity; Public exploit reference; On your watchlist

This month

HIGH 7.1WATCHLISTUPGRADE

CVE-2025-25198 is a high-severity flaw (CVSS 7.1) affecting mailcow\. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

mailcow: dockerized is an open source groupware/email suite based on docker. Prior to version 2025-01a, a vulnerability in mailcow's password reset functionality allows an attacker to manipulate the `Host HTTP` header to generate a password reset link pointing to an attacker-controlled domain. This can lead to account takeover if a user clicks the poisoned link. Version 2025-01a contains a patch. As a workaround, deactivate the password reset fun

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-601
Published	2025-02-12
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: mailcow

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-02-12 18:15 UTCPublished CVE record published
2026-06-17 09:00 UTCUpdated Record last modified

mailcow mailcow\ UPGRADE

Affected: < 2025-01a

Fixed in: 2025-01a

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mailcow || rpm -q mailcow || mailcow --version

2. UPGRADE to 2025-01a (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mailcow

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mailcow

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: mailcow 2025-01a - Host Header Password Reset Poisoning

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-25198?

mailcow\: upgrade to 2025-01a. Exact commands for each OS are on this page.

Is CVE-2025-25198 being exploited?

CVE-2025-25198 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-25198 affect?

CVE-2025-25198 affects mailcow\. Severity is high (CVSS 7.1). mailcow: dockerized is an open source groupware/email suite based on docker. Prior to version 2025-01a, a vulnerability in mailcow's password reset functionality allows an attacker to manipulate the `Host HTTP` header to generate a password

How urgent is CVE-2025-25198?

Priority 51/100. High severity; Public exploit reference; On your watchlist

Software pages

Docker vulnerabilities

Related CVEs

CVE-2025-53909 CRITICAL 9.1 UPGRADE mailcow: dockerized is an open source groupware/email suite based on docker
CVE-2024-41960 LOW 3.8 UPGRADE mailcow: dockerized is an open source groupware/email suite based on docker
CVE-2024-41959 HIGH 7.6 UPGRADE mailcow: dockerized is an open source groupware/email suite based on docker
CVE-2024-41958 MEDIUM 6.6 UPGRADE mailcow: dockerized is an open source groupware/email suite based on docker

References

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