How severe is CVE-2026-28288?

CVE-2026-28288 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-28288 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28288?

CVE-2026-28288 affects Dify. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28288?

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

Does CVE-2026-28288 have an EU (EUVD) identifier?

Yes. CVE-2026-28288 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9068.

When was CVE-2026-28288 published?

CVE-2026-28288 was published on 2026-02-27 and last updated on 2026-06-17.

CVE-2026-28288

CVE-2026-28288 is a medium-severity vulnerability in Dify with a CVSS 3.x base score of 5.3. 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-204.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 5.5
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9068
Weakness: CWE-204
Affected product: Dify
Published: 2026-02-27
Last modified: 2026-06-17

Description

Dify is an open-source LLM app development platform. Prior to 1.9.0, responses from the Dify API to existing and non-existent accounts differ, allowing an attacker to enumerate email addresses registered with Dify. Version 1.9.0 fixes the issue.

Frequently asked questions

What is CVE-2026-28288?: Dify is an open-source LLM app development platform. Prior to 1.9.0, responses from the Dify API to existing and non-existent accounts differ, allowing an attacker to enumerate email addresses registered with Dify. Version 1.9.0 fixes the issue.
How severe is CVE-2026-28288?: CVE-2026-28288 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-28288 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28288?: CVE-2026-28288 affects Dify. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28288?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28288 have an EU (EUVD) identifier?: Yes. CVE-2026-28288 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9068.
When was CVE-2026-28288 published?: CVE-2026-28288 was published on 2026-02-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dify:dify:*:*:*:*:*:*:*:*

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