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CVE-2026-63770— Glance 0.8.5 IP Spoofing Authentication Brute-Force Protection Bypass

CVSS 7.5 · High EPSS 0.20% · P10

Affected Version Matrix 1

VendorProductVersion RangeStatus
glanceappglance≤ 0.8.5affected
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I. Basic Information for CVE-2026-63770

Vulnerability Information
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Vulnerability Title
Glance 0.8.5 IP Spoofing Authentication Brute-Force Protection Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Glance through 0.8.5 contains an IP address spoofing vulnerability in the authentication handler that allows unauthenticated attackers to bypass brute-force lockout protections by supplying arbitrary values in the X-Forwarded-For request header when the server proxied option is enabled. Attackers can manipulate the leftmost value of the X-Forwarded-For header to make each login attempt appear to originate from a distinct IP address, preventing the per-IP failed-login counter from reaching the lockout threshold and enabling unlimited credential guessing against the authentication endpoint.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用不可信的源
Source: CVE Program / CVE List V5
Vulnerability Title
Glance 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Glance Glance是Glance组织的一款云计算平台中的镜像服务组件。 Glance 0.8.5及之前版本存在信任管理问题漏洞，该漏洞源于认证处理器中存在IP地址欺骗问题，在启用服务器代理选项时，未经身份验证的攻击者可通过在X-Forwarded-For请求标头中提供任意值，绕过暴力破解锁定保护，操纵X-Forwarded-For标头最左侧值使每次登录尝试显示来自不同IP地址，绕过每IP失败登录计数器达到锁定阈值，实现针对认证端点的无限制凭据猜测。
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

VendorProductAffected VersionsCPESubscribe
glanceappglance 0 ~ 0.8.5 -

II. Public POCs for CVE-2026-63770

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7336 chars
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III. Intelligence Information for CVE-2026-63770

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Patches & Fixes for CVE-2026-63770 (1)

Vendor Advisories for CVE-2026-63770 (1)

Proof of Concept for CVE-2026-63770 (1)

IV. Related Vulnerabilities

Same product: glance
Same weakness: CWE-348

V. Comments for CVE-2026-63770

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