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CVE-2026-77508— Weblate: Unverified REST API email changes

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.

WeblateOrg weblate是WeblateOrg组织的一款消息队列中间件。 WeblateOrg weblate 2026.8之前版本存在安全漏洞，该漏洞源于未验证新邮箱地址，可能导致经过身份验证的用户接受团队邀请而无需访问目标邮箱。

CVSS 3.5 · Low EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1158

Affected Version Matrix 1

VendorProduct Version RangeStatus
WeblateOrg weblate < 2026.8 affected
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I. Basic Information for CVE-2026-77508

Vulnerability Information
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Vulnerability Title
Weblate: Unverified REST API email changes
Source: CVE Program / CVE List V5
Vulnerability Description
Weblate is a web based localization tool. Prior to 2026.8, an authenticated user can change the account's primary email through PUT or PATCH requests to /api/users/{username}/ without verifying the new address, allowing a later team invitation for that address to be accepted without access to the intended recipient's mailbox. This issue is fixed in version 2026.8.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用假设不可变数据进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
WeblateOrg weblate 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WeblateOrg weblate是WeblateOrg组织的一款消息队列中间件。 WeblateOrg weblate 2026.8之前版本存在安全漏洞，该漏洞源于未验证新邮箱地址，可能导致经过身份验证的用户接受团队邀请而无需访问目标邮箱。
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 < 2026.8 -

II. Public POCs for CVE-2026-77508

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III. Intelligence Information for CVE-2026-77508

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Patches & Fixes for CVE-2026-77508 (1)

Vendor Advisories for CVE-2026-77508 (1)

Same Patch Batch · WeblateOrg · 2026-08-26 · 9 CVEs total

CVE-2026-55228 8.1 HIGH Weblate:: WebIDOR in GroupViewSet allows authenticated project manager to gain unauthorize
CVE-2026-61792 7.7 HIGH Weblate path traversal allows a project administrator to read arbitrary files via App stor
CVE-2026-62326 6.5 MEDIUM Weblate Has Uncontrolled Resource Consumption via
CVE-2026-77507 5.3 MEDIUM Weblate: Object-scoped RSS feeds disclose private change history to unauthorized users
CVE-2026-61790 4.4 MEDIUM Weblate: Team-enforced 2FA is bypassed for global permissions
CVE-2026-62249 4.3 MEDIUM Weblate: Restricted-component change history leaked to non-member project users through th
CVE-2026-55227 4.3 MEDIUM Observable object existence disclosure in private Weblate projects via globally scoped obj
CVE-2026-77573 3.5 LOW Weblate: DNS rebinding in VCS operations allows server-side request forgery

IV. Related Vulnerabilities

Same product: weblate
Same vendor: WeblateOrg
Same weakness: CWE-302

V. Comments for CVE-2026-77508

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