CVE-2026-28288

Q: How do I fix CVE-2026-28288?

Upgrade dify to 1.9.0 or later.

Q: Is CVE-2026-28288 being actively exploited?

Not that we know of. CVE-2026-28288 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.64% is the estimated probability that it will be exploited in the next 30 days. That is higher than 47% of all scored CVEs.

Q: How severe is CVE-2026-28288?

CVE-2026-28288 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-28288 affect?

Published advisories record a fix for dify (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

5.3

CVSS v3

NVD

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.

CWE-204

How to fix

Remediation Available

difyNVD

Affected:< 1.9.0Fixed in:1.9.0CVE-2026-28288derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.64%probability of exploitation in 30 days

47thpercentile

Moderate risk: more likely to be exploited than 47% of all known CVEs.

References

Exploit1

github.com

Issue Tracking1

github.com

Related Vulnerabilities

Other CWE-204 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-41697	Medium	5.3	20%	-	-
CVE-2016-9499	Medium	5.3	7.8%	-	Fix
CVE-2019-19030	Medium	5.3	1.9%	-	Fix
CVE-2022-0564	Medium	5.3	1.4%	-	Fix
CVE-2021-20049	High	7.5	1.3%	-	Fix
CVE-2021-39189	Medium	5.3	1.3%	-	Fix

Common questions

How do I fix CVE-2026-28288?

Upgrade dify to 1.9.0 or later.

Is CVE-2026-28288 being actively exploited?

Not that we know of. CVE-2026-28288 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.64% is the estimated probability that it will be exploited in the next 30 days. That is higher than 47% of all scored CVEs.

How severe is CVE-2026-28288?

CVE-2026-28288 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-28288 affect?

Published advisories record a fix for dify (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-28288

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-09.