CVE-2025-47951 Weblate lacks rate limiting when verifying second factor
Attackers can bypass two-factor authentication by automating OTP guessing due to missing rate limits, potentially taking over accounts.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-47951?
CVE-2025-47951 is a medium-severity vulnerability in WeblateOrg weblate, published on 16 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Weblate is a web based localization tool. Prior to version 5.12, the verification of the second factor was not subject to rate limiting. The absence of rate limiting on the second factor endpoint allows an attacker with valid credentials to automate OTP guessing. This issue has been patched in version 5.12.
Weakness: CWE-307
Which versions are affected by CVE-2025-47951?
3 open source packages ship an affected version, including weblate. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
weblate PyPI | All versions | 5.12 |
weblate PyPI | All versions | 5.12 |
weblate PyPI | All versions | 5.12 |
Products include Weblate Weblate.
How do I fix CVE-2025-47951?
Upgrade weblate to 5.12 or later.
Is CVE-2025-47951 being exploited?
There is no known exploitation of CVE-2025-47951 in the wild and no public exploit code.
Other vulnerabilities in WeblateOrg weblate
- CVE-2025-68398 Weblate has git config file overwrite vulnerability that leads to remote code execution
- CVE-2026-34393 Weblate: Privilege escalation in the user API endpoint
- CVE-2026-33435 Weblate: Remote code execution during backup restoration
- CVE-2026-34242 Weblate: Arbitrary File Read via Symlink
- CVE-2025-68279 Weblate has an arbitrary file read via symbolic links
Sources
Also known as GHSA-57jg-m997-cx3q, PYSEC-2026-2039.