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CVE-2024-52508: Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform

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HIGH 8.2UPGRADE

CVE-2024-52508 is a high-severity flaw (CVSS 8.2) affecting mail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. When a user is trying to set up a mail account with an email address like user@example.tld that does not support auto configuration, and an attacker managed to register autoconfig.tld, the used email details would be send to the server of the attacker. It is recommended that the Nextcloud Mail app is upgraded to 1.14.6, 1.15.4, 2.2.11, 3.6.3, 3.7.7 or 4.0.0.

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score8.2 (High)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededNone
User interactionRequired
EPSS exploit chance0.8% (top 45%)
CISA exploited listNo
WeaknessCWE-200
Published2024-11-15
Last modified2026-06-17
Publisher (CNA): GitHub, Inc. · Vendor: nextcloud

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

Am I affected?

Timeline

nextcloud mail UPGRADE
Affected: >= 1.9.0 and < 1.14.6 · >= 1.15.0 and < 1.15.4 · >= 2.1.0 and < 2.2.11 · >= 3.1.0 and < 3.6.3 · >= 3.7.0 and < 3.7.7
Fixed in: 1.14.6, 1.15.4, 2.2.11, 3.6.3, 3.7.7
Safe to downgrade to: a release before 1.9.0
1. Check installed version
apt-cache policy mail || rpm -q mail || mail --version
2. UPGRADE to 1.14.6 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade mail
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade mail
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 1.9.0 (Debian / Ubuntu)
apt-cache madison mail sudo apt install mail=<VERSION_BEFORE_1.9.0> sudo apt-mark hold mail
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list mail sudo dnf downgrade mail-<VERSION_BEFORE_1.9.0> sudo dnf versionlock add mail
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
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-2024-52508?

mail: upgrade to 1.14.6, 1.15.4, 2.2.11, 3.6.3, 3.7.7. Exact commands for each OS are on this page.

Is CVE-2024-52508 being exploited?

CVE-2024-52508 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-2024-52508 affect?

CVE-2024-52508 affects mail. Severity is high (CVSS 8.2). Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. When a user is trying to set up a mail account with an email address like user@example.tld that does not support auto configuration, and an attacker managed

How urgent is CVE-2024-52508?

Priority 42/100. High severity

Software pages

Nextcloud vulnerabilities

Related CVEs

References

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