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CVE-2026-44264— Weblate is vulnerable to XSS via crafted Markdown

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之前版本存在安全漏洞，该漏洞源于用户评论和其他用户提供内容中使用的Markdown渲染器未能正确清理某些属性。

CVSS 4.3 · Medium EPSS 0.37% · P30

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
WeblateOrg weblate < 5.17.1 affected
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I. Basic Information for CVE-2026-44264

Vulnerability Information
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Vulnerability Title
Weblate is vulnerable to XSS via crafted Markdown
Source: CVE Program / CVE List V5
Vulnerability Description
Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)
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 5.17.1之前版本存在安全漏洞，该漏洞源于用户评论和其他用户提供内容中使用的Markdown渲染器未能正确清理某些属性。
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-2026-44264

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III. Intelligence Information for CVE-2026-44264

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Patches & Fixes for CVE-2026-44264 (2)

Vendor Advisories for CVE-2026-44264 (1)

Vendor Pages for CVE-2026-44264 (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-2026-41519 4.2 MEDIUM Weblate's API Token Not Invalidated on Password Change
CVE-2026-41654 Weblate is Vulnerable to Authenticated SSRF via Project Backup Import bypassing validate_r

IV. Related Vulnerabilities

Same product: weblate
Same vendor: WeblateOrg
Same weakness: CWE-80

V. Comments for CVE-2026-44264

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