How severe is CVE-2026-28217?

CVE-2026-28217 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-28217 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28217?

CVE-2026-28217 affects Hoppscotch. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28217?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-28217 have an EU (EUVD) identifier?

Yes. CVE-2026-28217 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8914.

When was CVE-2026-28217 published?

CVE-2026-28217 was published on 2026-02-26 and last updated on 2026-06-17.

CVE-2026-28217

CVE-2026-28217 is a medium-severity vulnerability in Hoppscotch with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8914
Weakness: CWE-639
Affected product: Hoppscotch
Published: 2026-02-26
Last modified: 2026-06-17

Description

hoppscotch is an open source API development ecosystem. Prior to version 2026.2.0, the `userCollection` GraphQL query accepts an arbitrary collection ID and returns the full collection data — including title, type, and the serialized `data` field containing HTTP requests with headers and potentially secrets — to any authenticated user, without verifying that the requesting user owns the collection. This is an Insecure Direct Object Reference (IDOR) caused by a missing authorization check that exists on every other operation in the same resolver. Version 2026.2.0 fixes the issue.

Frequently asked questions

What is CVE-2026-28217?: hoppscotch is an open source API development ecosystem. Prior to version 2026.2.0, the `userCollection` GraphQL query accepts an arbitrary collection ID and returns the full collection data — including title, type, and the serialized `data` field containing HTTP requests with headers and potentially secrets — to any authenticated user, without verifying that the requesting user owns the collection. This is an Insecure Direct Object Reference (IDOR) caused by a missing authorization check that exists on every other operation in the same resolver. Version 2026.2.0 fixes the issue.
How severe is CVE-2026-28217?: CVE-2026-28217 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-28217 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28217?: CVE-2026-28217 affects Hoppscotch. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28217?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28217 have an EU (EUVD) identifier?: Yes. CVE-2026-28217 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8914.
When was CVE-2026-28217 published?: CVE-2026-28217 was published on 2026-02-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hoppscotch:hoppscotch:*:*:*:*:*:*:*:*

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