Open Redirect Vulnerability in Hoppscotch API Development Ecosystem
CVE-2026-34931

8.5HIGH

Key Information:

Vendor

Hoppscotch

Status
Hoppscotch
Vendor
CVE Published:
2 April 2026

What is CVE-2026-34931?

Hoppscotch, the open source API development ecosystem, contains an open redirect vulnerability prior to version 2026.3.0. This security flaw allows attackers to manipulate URLs in a way that can lead to token exfiltration. If exploited, these tokens can enable an attacker to impersonate the victim, resulting in unauthorized access to their account. The vulnerability has been addressed in version 2026.3.0, emphasizing the importance of updating to mitigate risks.

Affected Version(s)

hoppscotch < 2026.3.0

References

https://github.com/hoppscotch/hoppscotch/security/advisor...
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https://github.com/hoppscotch/hoppscotch/releases/tag/202...
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CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.