CVE-2026-34932

CRITICAL

hoppscotch: Stored XSS via mock server responses on backend origin

Title source: cna

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.

References (2)

Core 2

Core References

X_Refsource_Confirm x_refsource_confirm

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

X_Refsource_Misc x_refsource_misc

https://github.com/hoppscotch/hoppscotch/releases/tag/2026.3.0

Scores

CVSS v3 9.3

EPSS 0.0029

EPSS Percentile 20.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-79

Status published

Products (1)

hoppscotch/hoppscotch < 2026.3.0 (2 CPE variants)

Published Apr 02, 2026

Tracked Since Apr 03, 2026