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CVE-2026-74760— Google::Auth versions from 0.11 through 0.12 for Perl accept an authorization code from any local process because the gcloud-auth login callback does not check the OAuth state

Quick assessment

Affected
CVE-2026-74760
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.

Google::Auth Perl 模块 0.11 至 0.12 版本存在安全漏洞：由于 gcloud-auth 登录回调未验证 OAuth 状态参数，该模块会接受来自任意本地进程的授权码。 具体而言， 和 命令在向授权请求发送状态参数的同时，会从首个抵达其回环监听器的请求中直接获取授权码，而不对返回的状态值进行比对。 本地攻击者可提交其自身 Google 账户的授权码。命令行工具（CLI）随后将该授权码交换为刷新令牌，并将其以当前用户的凭据形式存储，导致该用户的所有工具转而以攻击者的账户身份运行。

AI Predicted 5.5 Difficulty: Moderate

Affected Version Matrix 1

VendorProduct Version RangeStatus
None None 0.11≤ 0.12 affected

I. Basic Information for CVE-2026-74760

Vulnerability Information
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Vulnerability Title
Google::Auth versions from 0.11 through 0.12 for Perl accept an authorization code from any local process because the gcloud-auth login callback does not check the OAuth state
Source: CVE Program / CVE List V5
Vulnerability Description
Google::Auth versions from 0.11 through 0.12 for Perl accept an authorization code from any local process because the gcloud-auth login callback does not check the OAuth state. The gcloud-auth login and application-default login commands send a state parameter with the authorization request, then take the code from the first request to reach their loopback listener without comparing the returned state. A local attacker can submit an authorization code for their own Google account. The CLI exchanges it and stores the refresh token as the user's credentials, so the user's tools then act as the attacker's account.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
源验证错误
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 0.11 ~ 0.12 -

II. Public POCs for CVE-2026-74760

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-74760

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Other References for CVE-2026-74760 (1)

IV. Related Vulnerabilities

Same weakness: CWE-346