Cross-Site Scripting (XSS) in github.com/mccutchen/go-httpbin (CVE-2025-45286)
Summary
Cross-site scripting in github.com/mccutchen/go-httpbin (CVE-2025-45286). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 2.18.0 or later.
Original description
The description as published by the source.
Description
The go-httpbin framework is vulnerable to XSS as the user can control the Response Content-Type from GET parameter. This allows attacker to execute cross site scripts in victims browser.
Affected URLs:
/response-headers?Content-Type=text/html&xss=%3Cimg/src/onerror=alert(%27xss%27)%3E/base64/PGltZy9zcmMvb25lcnJvcj1hbGVydCgneHNzJyk+?content-type=text/html/base64/decode/PGltZy9zcmMvb25lcnJvcj1hbGVydCgneHNzJyk+?content-type=text/html
Steps to reproduce:
- Visit one of the above mentioned URLs.
- XSS window will popup
Suggested fix
- Allow Only Safe Content-Type Values Or give users option to define whitelisted Content-Type headers
Criticality
The following can be major impacts of the issue:
- Access to victim's sensitive Personal Identifiable Information.
- Access to CSRF token
- Cookie injection
- Phishing
- And any other thing Javascript can perform
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2025-45286 has been found in github.com/mccutchen/go-httpbin.
Risk of unauthorized operations or information disclosure.
What to do: upgrade github.com/mccutchen/go-httpbin to 2.18.0 or later.
If unsure, ask your IT team or search "github.com/mccutchen/go-httpbin CVE-2025-45286" on the vendor's site.
CVE-2025-45286 (github.com/mccutchen/go-httpbin) — CWE-79
Patched: 2.18.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in github.com/mccutchen/go-httpbin.
Check the vendor advisory for the affected versions of github.com/mccutchen/go-httpbin.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 2.18.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/mccutchen/go-httpbin' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'github.com/mccutchen/go-httpbin' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
github.com/mccutchen/go-httpbinを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade github.com/mccutchen/go-httpbin to 2.18.0ステージング環境で 2.18.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory nvd.nist.gov
- package github.com
- web github.com
- web github.com
- web github.com