What is CVE-2026-34932?

CVE-2026-34932 is a critical-severity vulnerability in Hoppscotch, classified under Cross-site Scripting. CVSS score: 9.3/10. Published 2026-04-02.

How severe is CVE-2026-34932?

Critical severity. CVSS v3 base score is 9.3 out of 10.

XSS in Hoppscotch

CVE-2026-34932

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-04-02 · last modified 2026-07-24.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (31.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Hoppscotch — versions < 2026.3.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/hoppscotch/hoppscotch/security/advisories/GHSA-wj4r-hr4h-g98v (Vendor Advisory)
github.com/hoppscotch/hoppscotch/releases/tag/2026.3.0 (Release Notes)

Frequently asked questions

What is CVE-2026-34932?: CVE-2026-34932 is a critical-severity vulnerability in Hoppscotch, classified under Cross-site Scripting. CVSS score: 9.3/10. Published 2026-04-02.
How severe is CVE-2026-34932?: Critical severity. CVSS v3 base score is 9.3 out of 10.