VulnerabilityAnalyzed
CVE-2026-34931
Prior to version 2026.3.0, there is an open redirect vulnerability that leads to token exfiltration.
HIGH 8.5EPSS 0.37%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 8.5 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.37% probability · 31th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-601
- Affected
- hoppscotch/hoppscotch
- Source
- security-advisories@github.com
References
- https://github.com/hoppscotch/hoppscotch/releases/tag/2026.3.0Release Notes
- https://github.com/hoppscotch/hoppscotch/security/advisories/GHSA-7fg7-wx5q-6m3vExploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.