hoppscotch-backend is vulnerable to Cross-site Scripting (XSS)
55
Medium Risk
Affected versions of this package are vulnerable to stored XSS via path-based mock server responses. An attacker can create a mock example with a script-capable Content-Type and malicious HTML/JavaScript body. When the response is served through the path-based backend URL (<backend-origin>/mock/<id>/...), it is treated as same-origin with the backend, allowing the injected script to perform authenticated actions using the victim’s backend session.
You are affected if you are using a version that falls within the vulnerable range.
hoppscotch-backend is vulnerable to Cross-site Scripting (XSS) in versions 0.0.1 - 2026.2.1.
Upgrade the hoppscotch-backend library to the patch version.
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SOC 2Compliant
ISO 27001Compliant