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CVE-2026-41654— Weblate is Vulnerable to Authenticated SSRF via Project Backup Import bypassing validate_repo_url

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 5.17.1之前版本存在输入验证错误漏洞，该漏洞源于项目备份导入时未验证组件JSON中的仓库URL，允许攻击者指定私有地址或非白名单协议，绕过validate_repo_url验证器，可能导致服务器端请求伪造。

AI Predicted 8.1 Difficulty: Easy EPSS 0.50% · P42

Affected Version Matrix 1

VendorProduct Version RangeStatus
WeblateOrg weblate < 5.17.1 affected
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I. Basic Information for CVE-2026-41654

Vulnerability Information
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Vulnerability Title
Weblate is Vulnerable to Authenticated SSRF via Project Backup Import bypassing validate_repo_url
Source: CVE Program / CVE List V5
Vulnerability Description
Weblate is a web based localization tool. Prior to version 5.17.1, an authenticated user with project.add permission (default on hosted Weblate SaaS and for any user holding an active billing/trial plan) can import a crafted project backup ZIP whose components/<name>.json contains an attacker-chosen repo URL pointing at a private address (e.g. http://127.0.0.1:9999/) or using a non-allow-listed scheme (e.g. file://, git://). Weblate persists the component via Component.objects.bulk_create([component])[0], which bypasses Django's full_clean() and therefore never runs the validate_repo_url validator. The URL is subsequently written verbatim into .git/config by configure_repo(pull=False). This issue has been patched in version 5.17.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Weblate 输入验证错误漏洞
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 5.17.1之前版本存在输入验证错误漏洞，该漏洞源于项目备份导入时未验证组件JSON中的仓库URL，允许攻击者指定私有地址或非白名单协议，绕过validate_repo_url验证器，可能导致服务器端请求伪造。
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 < 5.17.1 -

II. Public POCs for CVE-2026-41654

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III. Intelligence Information for CVE-2026-41654

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Patches & Fixes for CVE-2026-41654 (3)

Vendor Advisories for CVE-2026-41654 (1)

Vendor Pages for CVE-2026-41654 (1)

Same Patch Batch · WeblateOrg · 2026-05-07 · 4 CVEs total

CVE-2026-44263 4.3 MEDIUM Weblate: Private Translation Enumeration via Screenshot API
CVE-2026-44264 4.3 MEDIUM Weblate is vulnerable to XSS via crafted Markdown
CVE-2026-41519 4.2 MEDIUM Weblate's API Token Not Invalidated on Password Change

IV. Related Vulnerabilities

Same product: weblate
Same vendor: WeblateOrg
Same weakness: CWE-20

V. Comments for CVE-2026-41654

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