CVE-2026-34847: hoppscotch is an open source API development ecosystem

Q: How do I fix CVE-2026-34847?

hoppscotch: upgrade to 2026.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-34847 being exploited?

CVE-2026-34847 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-34847 affect?

CVE-2026-34847 affects hoppscotch. Severity is medium (CVSS 4.7). hoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, the /enter page contains a DOM-based open redirect vulnerability. The redirect query parameter is directly used to construct a URL and redirect the user with

Q: How urgent is CVE-2026-34847?

Priority 30/100. Public exploit reference

Routine

MEDIUM 4.7UPGRADE

CVE-2026-34847 is a medium-severity flaw (CVSS 4.7) affecting hoppscotch. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

hoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, the /enter page contains a DOM-based open redirect vulnerability. The redirect query parameter is directly used to construct a URL and redirect the user without proper validation. This issue has been patched in version 2026.3.0.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.7 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 66%)
CISA exploited list	No
Weakness	CWE-601
Published	2026-04-02
Last modified	2026-07-24

Publisher (CNA): GitHub, Inc. · Vendor: hoppscotch

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-02 20:16 UTCPublished CVE record published
2026-07-24 21:10 UTCUpdated Record last modified

hoppscotch hoppscotch UPGRADE

Affected: < 2026.3.0

Fixed in: 2026.3.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy hoppscotch || rpm -q hoppscotch || hoppscotch --version

2. UPGRADE to 2026.3.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade hoppscotch

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hoppscotch

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: Hoppscotch <= 2026.2.1 - Open Redirect

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34847?

hoppscotch: upgrade to 2026.3.0. Exact commands for each OS are on this page.

Is CVE-2026-34847 being exploited?

CVE-2026-34847 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34847 affect?

CVE-2026-34847 affects hoppscotch. Severity is medium (CVSS 4.7). hoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, the /enter page contains a DOM-based open redirect vulnerability. The redirect query parameter is directly used to construct a URL and redirect the user with

How urgent is CVE-2026-34847?

Priority 30/100. Public exploit reference

Related CVEs

CVE-2026-34931 CRITICAL 9.6 UPGRADE hoppscotch is an open source API development ecosystem
CVE-2026-34932 CRITICAL 9.3 UPGRADE hoppscotch is an open source API development ecosystem
CVE-2026-34848 MEDIUM 5.4 UPGRADE hoppscotch is an open source API development ecosystem
CVE-2026-50160 CRITICAL 10.0 UPGRADE Hoppscotch is an API development ecosystem

References

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