CVE-2026-103667— Gitea container registry stored XSS through blob media type
Quick assessment
Affected
Gitea Gitea
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.
Gitea 的容器镜像仓库在提供 Blob 下载时，其 头直接从推送镜像的清单（manifest）中声明的媒体类型获取，未设置 头，也未实施严格的内容安全策略（CSP）。攻击者若能向仓库推送容器镜像，即可发布一个包含 HTML 和 JavaScript 代码的 Blob，并将其媒体类型设置为 。当已登录该 Gitea 实例的用户在浏览器中访问该 Blob 的 URL 时，脚本将在 Gitea 的源站上下文中执行，从而可以模拟受害者的身份执行任意操作，例如创建 API 令牌。
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I. Basic Information for CVE-2026-103667
Vulnerability Information
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Vulnerability Title
Gitea container registry stored XSS through blob media type
Source: CVE Program / CVE List V5
Vulnerability Description
Gitea's container registry served blob downloads with a `Content-Type` taken from the media type declared in pushed image manifests, without a `Content-Disposition` or restrictive content security policy. A user who can push container images can publish a blob containing HTML and JavaScript with a `text/html` media type. When a victim who is authenticated to the instance opens the blob URL in a browser, the script runs on the Gitea origin and can perform actions as the victim, such as creating API tokens.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-103667
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-103667 (4)
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https://github.com/go-gitea/gitea/releases/tag/v28.0.0 release-notes
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https://blog.gitea.com/release-of-28.0.0/ release-notes
Same Patch Batch · Gitea · 2026-10-06 · 21 CVEs total
| CVE-2026-104632 | Gitea fork workflow approval bypass through cancel and rerun | |
| CVE-2026-73278 | Gitea WebAuthn bypass during OAuth and OIDC sign-in | |
| CVE-2026-79960 | Gitea deploy key pushes acting as the repository owner | |
| CVE-2026-70357 | Gitea repository migration SSRF through DNS rebinding | |
| CVE-2026-96580 | Gitea Actions memory exhaustion through large static matrices | |
| CVE-2026-96589 | Gitea private repository access retained after rejected transfer | |
| CVE-2026-96400 | Gitea migration SSRF to reserved addresses through ALLOWED_DOMAINS | |
| CVE-2026-96399 | Gitea denial of service through external issue tracker patterns | |
| CVE-2026-96404 | Gitea installer authentication bypass for existing accounts | |
| CVE-2026-104626 | Gitea fork workflow job revival through later approval | |
| CVE-2026-94205 | Gitea fork workflow approval bypass through maintainer-triggered events | |
| CVE-2026-104636 | Gitea SSRF through Git HTTP redirects in mirrors and fetches | |
| CVE-2026-101027 | Gitea migration SSRF through ALLOWED_DOMAINS address check bypass | |
| CVE-2026-101029 | Gitea migration and pull mirror SSRF through multi-answer DNS | |
| CVE-2026-95106 | Gitea review and execution mismatch through duplicate tree entries | |
| CVE-2026-95112 | Gitea issue reference parsing CPU exhaustion | |
| CVE-2026-89430 | Gitea push mirror SSRF and forced writes to internal Git hosts | |
| CVE-2026-103504 | Gitea API team demotion not applied to unit permissions | |
| CVE-2026-103059 | Gitea built-in SSH server authentication bypass through key case folding | |
| CVE-2026-103670 | Gitea trusted workflow cancellation by unapproved fork runs |
IV. Related Vulnerabilities
Same product: Gitea
-
CVE-2026-73278
Gitea WebAuthn bypass during OAuth and OIDC sign-in -
CVE-2026-96589
Gitea private repository access retained after rejected tran -
CVE-2026-96580
Gitea Actions memory exhaustion through large static matrice -
CVE-2026-96404
Gitea installer authentication bypass for existing accounts -
CVE-2026-96400
Gitea migration SSRF to reserved addresses through ALLOWED_D
Same vendor: Gitea
-
CVE-2026-73278
Gitea WebAuthn bypass during OAuth and OIDC sign-in -
CVE-2026-96589
Gitea private repository access retained after rejected tran -
CVE-2026-96580
Gitea Actions memory exhaustion through large static matrice -
CVE-2026-96404
Gitea installer authentication bypass for existing accounts -
CVE-2026-96400
Gitea migration SSRF to reserved addresses through ALLOWED_D
V. Comments for CVE-2026-103667
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