What is CVE-2026-34848?

CVE-2026-34848 is a medium-severity vulnerability in Hoppscotch, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-02.

How severe is CVE-2026-34848?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Hoppscotch

CVE-2026-34848

hoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, there is a stored XSS vulnerability in the team member overflow tooltip via display name. This issue has been patched in version 2026.3.0.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (10.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Hoppscotch — versions < 2026.3.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/hoppscotch/hoppscotch/security/advisories/GHSA-vw93-4m6p-ccm9 (x_refsource_CONFIRM)
https://github.com/hoppscotch/hoppscotch/releases/tag/2026.3.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34848?: CVE-2026-34848 is a medium-severity vulnerability in Hoppscotch, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-02.
How severe is CVE-2026-34848?: Medium severity. CVSS v3 base score is 5.4 out of 10.