Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-48501— GitHub CLI tokens leak via `gh attestation` commands

Quick assessment

Affected
cli cli
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GitHub CLI是GitHub CLI开源的一个命令行上的 GitHub。 GitHub CLI 2.93.0之前版本存在安全漏洞，该漏洞源于在gh attestation、gh release verify和gh release verify-asset命令中向TUF仓库镜像的API请求错误包含授权标头，CLI使用共享HTTP客户端且身份验证层自动附加令牌，主机规范化逻辑将任何github.com子域折叠为github.com，因此对tuf-repo.github.com的请求被视为对github.

CVSS 7.4 · High EPSS 0.45% · P37

Affected Version Matrix 1

VendorProduct Version RangeStatus
cli cli < 2.93.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-48501

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
GitHub CLI tokens leak via `gh attestation` commands
Source: CVE Program / CVE List V5
Vulnerability Description
GitHub CLI (gh) is GitHub’s official command line tool. Prior to 2.93.0, GitHub CLI incorrectly includes authorization header in API requests to TUF repository mirrors via gh attestation, gh release verify, and gh release verify-asset commands. The CLI uses a shared HTTP client with an authentication layer that automatically attaches tokens to outgoing requests. This layer lacks accurate host detection and can incorrectly attribute the target host, providing it with a token it should never receive. Specifically, the host normalization logic collapses any *.github.com subdomain to github.com, so a request to tuf-repo.github.com (a GitHub Pages site, not a GitHub API endpoint) is treated as a request to github.com and receives the user's github.com token. For hosts that don't match github.com or a known GHES instance at all, the resolver falls back to GH_ENTERPRISE_TOKEN if set. The gh attestation, gh release verify and gh release verify-asset commands fetch data from several external hosts as part of their normal operation (TUF metadata from tuf-repo.github.com and tuf-repo-cdn.sigstore.dev, artifact bundles from Azure Blob Storage). Because these requests go through the same authenticated HTTP client, the token is sent to all of them. This vulnerability is fixed in 2.93.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
GitHub CLI 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitHub CLI是GitHub CLI开源的一个命令行上的 GitHub。 GitHub CLI 2.93.0之前版本存在安全漏洞，该漏洞源于在gh attestation、gh release verify和gh release verify-asset命令中向TUF仓库镜像的API请求错误包含授权标头，CLI使用共享HTTP客户端且身份验证层自动附加令牌，主机规范化逻辑将任何github.com子域折叠为github.com，因此对tuf-repo.github.com的请求被视为对github.
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
cli cli < 2.93.0 -

II. Public POCs for CVE-2026-48501

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9251 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-48501

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-48501 (1)

IV. Related Vulnerabilities

Same product: cli
Same vendor: cli
Same weakness: CWE-863

V. Comments for CVE-2026-48501

No comments yet

Leave a comment