CVE-2025-49134 Weblate exposes personal IP address via e-mail

Low 2.1 Published Updated

Weblate exposed users' full IP addresses in audit log notifications, allowing third-party servers to obtain this personal information.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2025-49134?

CVE-2025-49134 is a low-severity vulnerability in WeblateOrg weblate, published on 16 Jun 2025. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Weblate is a web based localization tool. Prior to version 5.12, the audit log notifications included the full IP address of the acting user. This could be obtained by third-party servers such as SMTP relays, or spam filters. This issue has been patched in version 5.12.

Weakness: CWE-359

Which versions are affected by CVE-2025-49134?

3 open source packages ship an affected version, including weblate. It affects 1 product.

PackageAffectedFixed in
weblate PyPIAll versions5.12
weblate PyPIAll versions5.12
weblate PyPIAll versions5.12

Products include Weblate Weblate.

How do I fix CVE-2025-49134?

Upgrade weblate to 5.12 or later.

Is CVE-2025-49134 being exploited?

There is no known exploitation of CVE-2025-49134 in the wild and no public exploit code.

Sources

Also known as GHSA-4qqf-9m5c-w2c5, PYSEC-2026-2038.

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