CVE-2025-45286
Reflected XSS in go-httpbin due to unrestricted client control over Content-Type
A cross-site scripting (XSS) vulnerability in mccutchen httpbin v2.17.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
A cross-site scripting (XSS) vulnerability in mccutchen httpbin v2.17.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.
- Record
CVE-2025-45286- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-80
- Updated
- 2026-11-02
EUVDEUVD-2025-7205
A cross-site scripting (XSS) vulnerability in mccutchen httpbin v2.17.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.
- Record
EUVD-2025-7205- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-528q-4pgm-wvg2
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:
- 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
- Record
GHSA-528q-4pgm-wvg2- CVSS 4.0
- 1.3 Low
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 - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
A cross-site scripting (XSS) vulnerability in mccutchen httpbin v2.17.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.
- Record
CVE-2025-45286- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-80
- Updated
- 2026-11-04
OSV
A cross-site scripting (XSS) vulnerability in mccutchen httpbin v2.17.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.
- Record
CVE-2025-45286- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-05
OSVGHSA-528q-4pgm-wvg2
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:
- 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
- Record
GHSA-528q-4pgm-wvg2- CVSS 4.0
- 1.3 Low
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 - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVGO-2025-3554 No score
Reflected XSS in go-httpbin due to unrestricted client control over Content-Type in github.com/mccutchen/go-httpbin
Reflected XSS in go-httpbin due to unrestricted client control over Content-Type in github.com/mccutchen/go-httpbin
- Record
GO-2025-3554- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/mccutchen/go-httpbinGo |
before 2.18.0 | 2.18.0 |
github.com/mccutchen/go-httpbin/v2Go |
before 2.18.0 | 2.18.0 |
github.com/mccutchen/go-httpbinGo |
All versions | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | NVD | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-45286 is a medium vulnerability (CVSS 6.1) in Httpbingo Go-httpbin, published March 21, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 18th percentile. Fixed in github.com/mccutchen/go-httpbin 2.18.0.
References
github.com/mccutchen/go-httpbin/security/advisories/GHSA-528q-4pgm-wvg2
nvd.nist.gov/vuln/detail/CVE-2025-45286