How to Fix CVE-2026-34931: hoppscotch (Bundle Sibling)

*By Sai Kiran Pandrala*

Last verified: 2026-05-25

CVE-2026-34931 is a sibling vulnerability in the same Hoppscotch hoppscotch advisory bundle as CVE-2026-34847. The same patched build closes every CVE in the bundle, so the remediation procedure for CVE-2026-34931 matches the primary write-up.

What is different about CVE-2026-34931?

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.

Impact is consistent with the bundle: an open redirect that can be used in phishing. The patched build closes every code path in the advisory in one update.

How to fix CVE-2026-34931

Apply the patched build per the primary write-up: How to Fix CVE-2026-34847.

For a quick check, confirm the running version of hoppscotch:

# Confirm the installed version via your package manager
dpkg -l | grep -i hoppscotch   # Debian/Ubuntu
rpm -qa | grep -i hoppscotch   # RHEL/CentOS/Rocky

Frequently asked questions

Is CVE-2026-34931 being actively exploited?

Not at the time of writing. It is not listed in CISA's Known Exploited Vulnerabilities catalog. That status can change, so monitor the vendor advisory and the KEV catalog if the system is exposed.

How severe is CVE-2026-34931?

CVSS rates it 8.5 (High). Use that score to set your patch priority alongside the other items in your queue.

Do I have to take hoppscotch offline to apply the patch?

It depends on the deployment. High-availability or clustered installs can usually patch one node at a time with no full outage. Standalone installs typically need a short restart. Always follow the vendor's documented upgrade steps.

What if my vulnerability scanner still flags CVE-2026-34931 after I patch?

Re-run the scan after a service restart, then confirm the scanner's plugin set is up to date. Some scanners detect by banner version only and lag the official fix metadata by a release.

References

• Official vendor advisory: https://github.com/hoppscotch/hoppscotch/security/advisories/GHSA-7fg7-wx5q-6m3v
• NVD entry: https://nvd.nist.gov/vuln/detail/CVE-2026-34931
• CISA KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• Primary write-up: How to Fix CVE-2026-34847

*Written by Sai Kiran Pandrala. Last verified 2026-05-25. Part of the Hoppscotch hoppscotch advisory bundle. Full procedure at how-to-fix-cve-2026-34847.*