CVE-2026-34931— hoppscotch: Improper loopback redirect_uri validation in device-login flow
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I. Basic Information for CVE-2026-34931
Vulnerability Information
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Vulnerability Title
hoppscotch: Improper loopback redirect_uri validation in device-login flow
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Hoppscotch 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hoppscotch是Hoppscotch开源的一个Api开发生态系统。 hoppscotch 2026.3.0之前版本存在输入验证错误漏洞，该漏洞源于开放重定向漏洞可能导致令牌泄露和账户接管。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| hoppscotch | hoppscotch | < 2026.3.0 | - |
II. Public POCs for CVE-2026-34931
| # | POC Description | Source Link | Shenlong Link |
|---|
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- Release 2026.3.0 · hoppscotch/hoppscotch · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-34931
Same Patch Batch · hoppscotch · 2026-04-02 · 4 CVEs total
| CVE-2026-34848 | 5.4 MEDIUM | hoppscotch: Stored XSS in team member overflow tooltip via display name |
| CVE-2026-34847 | 4.7 MEDIUM | hoppscotch: Open redirect via `/enter?redirect=` |
| CVE-2026-34932 | hoppscotch: Stored XSS via mock server responses on backend origin |
IV. Related Vulnerabilities
Same product: hoppscotch
- CVE-2026-34848
hoppscotch: Stored XSS in team member overflow tooltip via d - CVE-2026-34932
hoppscotch: Stored XSS via mock server responses on backend - CVE-2026-34847
hoppscotch: Open redirect via `/enter?redirect=` - CVE-2026-30825
hoppscotch: IDOR - Any authenticated user can revoke any oth - CVE-2026-28217
IDOR in GraphQL userCollection Query Exposes Other Users' Pr
Same vendor: hoppscotch
- CVE-2026-34848
hoppscotch: Stored XSS in team member overflow tooltip via d - CVE-2026-34932
hoppscotch: Stored XSS via mock server responses on backend - CVE-2026-34847
hoppscotch: Open redirect via `/enter?redirect=` - CVE-2026-30825
hoppscotch: IDOR - Any authenticated user can revoke any oth - CVE-2026-28217
IDOR in GraphQL userCollection Query Exposes Other Users' Pr
Same weakness: CWE-601
- CVE-2026-42350
Kargo: Open Redirect in UI OIDC Login Flow via redirectTo Qu - CVE-2026-42195
Unvalidated gitlab URL parameter redirects OAuth authorize s - CVE-2026-3318
Multiple vulnerabilities in Cradle e-commerce - CVE-2026-42259
Saltcorn: Open Redirect in `POST /auth/login` due to incompl - CVE-2026-6795
Open Redirect in DivvyDrive Information Technologies' DivvyD
V. Comments for CVE-2026-34931
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