Quick answers
- Is CVE-2026-34932 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-34932 being exploited in the wild.
- How severe is CVE-2026-34932?
- Critical severity, with a CVSS score of 9.3, published 2 April 2026.
- Which products and versions are affected?
- hoppscotch hoppscotch-backend < 2026.3.0.
- Is there a fix for CVE-2026-34932?
- A patch was published on 2026-03-31: Fixed in version 2026.3.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-34932 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-34932?
- Check whether you run Hoppscotch. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A stored cross-site scripting (XSS) vulnerability exists in Hoppscotch's backend origin, specifically within mock server responses and cross-team request moves. An attacker can inject a malicious payload into a mock server response body; when a victim navigates to the mock URL, the script executes in the context of the Hoppscotch domain. This execution can be leveraged to perform Cross-Site Request Forgery (CSRF) attacks, such as programmatically creating and exfiltrating Personal Access Tokens (PATs) or querying sensitive user data via the GraphQL API. The vulnerability is rooted in improper neutralization of input during web page generation (CWE-79). It has been addressed in version 2026.3.0 by sanitizing mock server responses and routing operations through the platform backend.
Affected products
- hoppscotch hoppscotch-backend < 2026.3.0
Timeline
- 2026-03-31: patched: Fixed in version 2026.3.0
- 2026-04-02: disclosed: Initial advisory publication