CVE-2026-34931
hoppscotch: Improper loopback redirect_uri validation in device-login flow
- State
- Published
- Severity
- 8.5 High
- Published
- Apr 2, 2026
- Updated
- Apr 6, 2026
- Reserved
- Mar 31, 2026
Description
hoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, there is an open redirect vulnerability that leads to token exfiltration. With these tokens, the attacker can sign in as the victim to takeover their account. This issue has been patched in version 2026.3.0.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.5 High | 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 | GitHub_M |
Weaknesses
- CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
Affected Products
| Product | Versions |
|---|---|
hoppscotchhoppscotch |
|
References
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