CVE-2026-34932

hoppscotch: Stored XSS via mock server responses on backend origin

State: Published
Severity: 8.5 High
Published: Apr 2, 2026
Updated: Apr 6, 2026
Reserved: Mar 31, 2026

Description

hoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, there is a stored XSS vulnerability that can lead to CSRF. This issue has been patched in version 2026.3.0.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
hoppscotchhoppscotch	< 2026.3.0Affected

References

https://github.com/hoppscotch/hoppscotch/security/advisories/GHSA-wj4r-hr4h-g98v
https://github.com/hoppscotch/hoppscotch/releases/tag/2026.3.0

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