GHSA-528q-4pgm-wvg2 – github.com/mccutchen/go-httpbin

Package

Manager: go
Name: github.com/mccutchen/go-httpbin
Vulnerable Version: >=0 <2.18.0

Severity

Level: Low

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U

EPSS: N/A pctlN/A

Details

Reflected XSS in go-httpbin due to unrestricted client control over Content-Type ### 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: 1. Visit one of the above mentioned URLs. 2. 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

Metadata

Created: 2025-03-21T22:29:47Z
Modified: 2025-03-21T22:29:47Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-528q-4pgm-wvg2/GHSA-528q-4pgm-wvg2.json
CWE IDs: ["CWE-79"]
Alternative ID: N/A
Finding: F008
Auto approve: 1