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Vulnerability record · CVE-2026-34932 · published 2 April 2026

CVE-2026-34932: Hoppscotch cross-site scripting vulnerability

Hoppscotch · Hoppscotch

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.

8.5 CVSS 4.0 High EPSS 0.40% · top 68.5% CWE-79 · Cross-site scripting
8.5CVSS 4.0 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
24 Jul 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/hoppscotch/hoppscotch/releases/tag/2026.3.0 Release Notes
https://github.com/hoppscotch/hoppscotch/security/advisories/GHSA-wj4r-hr4h-g98v Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-50160Hoppscotch mass assignment vulnerabilityHoppscotch is an API development ecosystem. In self-hosted deployments of hoppscotch-backend from version 2026.4.1 and earlier, the unauthenticated P…EPSS 1.7%9.1CVE-2026-28215Hoppscotch improper access control vulnerabilityhoppscotch is an open source API development ecosystem. Prior to version 2026.2.0, an unauthenticated attacker can overwrite the entire infrastructur…EPSS 0.66%8.8CVE-2023-34097Hoppscotch sensitive information in log file vulnerabilityhoppscotch is an open source API development ecosystem. In versions prior to 2023.4.5 the database password is exposed in the logs when showing the d…EPSS 0.68%8.5CVE-2026-34931Hoppscotch open redirect vulnerabilityhoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, there is an open redirect vulnerability that leads to token exfilt…EPSS 0.43%8.3CVE-2026-28216Hoppscotch insecure direct object reference vulnerabilityhoppscotch is an open source API development ecosystem. Prior to version 2026.2.0, any logged-in user can read, modify or delete another user's perso…EPSS 0.42%8.0CVE-2022-0121Hoppscotch cross-site scripting vulnerabilityImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in hoppscotch hoppscotch/hoppscotch.This issue aff…EPSS 1.2%6.5CVE-2026-30825Hoppscotch insecure direct object reference vulnerabilityhoppscotch is an open source API development ecosystem. Prior to version 2026.2.1, the DELETE /v1/access-tokens/revoke endpoint allows any authentica…EPSS 0.27%6.5CVE-2026-28217Hoppscotch missing authorization vulnerabilityhoppscotch is an open source API development ecosystem. Prior to version 2026.2.0, the `userCollection` GraphQL query accepts an arbitrary collection…EPSS 0.38%

Source: NIST National Vulnerability Database (record CVE-2026-34932), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.