CVE-2025-47951— Weblate lacks rate limiting when verifying second factor
Quick assessment
Affected
WeblateOrg weblate
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Weblate是Weblate开源的一个 Copyleft 的基于 web 的自由软件持续本地化系统。 Weblate 5.12之前版本存在安全漏洞，该漏洞源于第二因素验证未进行速率限制，可能导致OTP猜测。
Possible ATT&CK Techniques 1 AI
T1110.003 · Password Spraying
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I. Basic Information for CVE-2025-47951
Vulnerability Information
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Vulnerability Title
Weblate lacks rate limiting when verifying second factor
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Weblate 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Weblate是Weblate开源的一个 Copyleft 的基于 web 的自由软件持续本地化系统。 Weblate 5.12之前版本存在安全漏洞，该漏洞源于第二因素验证未进行速率限制，可能导致OTP猜测。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| WeblateOrg | weblate | < 5.12 | - |
|
II. Public POCs for CVE-2025-47951
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: weblate
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CVE-2026-45106
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Weblate is vulnerable to XSS via crafted Markdown -
CVE-2026-44263
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CVE-2026-41519
Weblate's API Token Not Invalidated on Password Change
Same vendor: WeblateOrg
-
CVE-2026-45106
Weblate: Stored HTML injection in editor search preview -
CVE-2026-50127
Weblate SSRF: outbound URL guard misses the NAT64 well-known -
CVE-2026-42150
wlc: print_html outputs API data without HTML escaping, enab -
CVE-2026-44264
Weblate is vulnerable to XSS via crafted Markdown -
CVE-2026-44263
Weblate: Private Translation Enumeration via Screenshot API
Same weakness: CWE-307
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CVE-2026-75575
Rocket.Chat Missing DDP Rate Limit on the sendForgotPassword -
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RansomLook Login Endpoint Allows Timing-Based Username Enume -
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HCL Hive is affected by a missing rate limit -
CVE-2026-76213
phpMyFAQ before 4.1.7 2FA Brute-Force via Session-Scoped Thr -
CVE-2026-73529
Plainpad Missing Rate Limiting via POST /v1/sessions
V. Comments for CVE-2025-47951
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