CVE-2026-41654— Weblate is Vulnerable to Authenticated SSRF via Project Backup Import bypassing validate_repo_url
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
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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|---|
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- Release Weblate 5.17.1 · WeblateOrg/weblate · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-41654
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
- CVE-2026-44264
Weblate is vulnerable to XSS via crafted Markdown - CVE-2026-44263
Weblate: Private Translation Enumeration via Screenshot API - CVE-2026-41519
Weblate's API Token Not Invalidated on Password Change - CVE-2026-40256
Weblate: Prefix-Based Repository Boundary Check Bypass via S - CVE-2026-39845
Weblate: SSRF via the webhook add-on using unprotected fetch
Same vendor: WeblateOrg
- 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 - CVE-2026-41519
Weblate's API Token Not Invalidated on Password Change - CVE-2026-40256
Weblate: Prefix-Based Repository Boundary Check Bypass via S
Same weakness: CWE-20
V. Comments for CVE-2026-41654
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