Stored XSS Vulnerability in Hoppscotch API Development Ecosystem
CVE-2026-34848

5.4MEDIUM

Key Information:

Vendor

Hoppscotch

Status
Hoppscotch
Vendor
CVE Published:
2 April 2026

What is CVE-2026-34848?

Hoppscotch, an open source API development ecosystem, was found to have a stored cross-site scripting (XSS) vulnerability in the team member overflow tooltip via display name prior to version 2026.3.0. This vulnerability could allow an attacker to execute arbitrary JavaScript in the context of the user's browser, potentially leading to unauthorized actions or access to sensitive information. The issue has since been addressed in version 2026.3.0, encouraging users to update their installations to mitigate the risks associated with this vulnerability.

Affected Version(s)

hoppscotch < 2026.3.0

References

https://github.com/hoppscotch/hoppscotch/security/advisor...
x_refsource_CONFIRM
https://github.com/hoppscotch/hoppscotch/releases/tag/202...
x_refsource_MISC

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.