How severe is CVE-2026-23794?

CVE-2026-23794 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-23794 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23794?

CVE-2026-23794 affects Apache Syncope. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23794?

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

Does CVE-2026-23794 have an EU (EUVD) identifier?

Yes. CVE-2026-23794 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5265.

When was CVE-2026-23794 published?

CVE-2026-23794 was published on 2026-02-03 and last updated on 2026-06-17.

CVE-2026-23794

CVE-2026-23794 is a medium-severity vulnerability in Apache Syncope with a CVSS 3.x base score of 6.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5265
Weakness: CWE-79
Affected product: Apache Syncope
Published: 2026-02-03
Last modified: 2026-06-17

Description

Reflected XSS in Apache Syncope's Enduser Login page. An attacker that tricks a legitimate user into clicking a malicious link and logging in to Syncope Enduser could steal that user's credentials. This issue affects Apache Syncope: from 3.0 through 3.0.15, from 4.0 through 4.0.3. Users are recommended to upgrade to version 3.0.16 / 4.0.4, which fix this issue.

Frequently asked questions

What is CVE-2026-23794?: Reflected XSS in Apache Syncope's Enduser Login page. An attacker that tricks a legitimate user into clicking a malicious link and logging in to Syncope Enduser could steal that user's credentials. This issue affects Apache Syncope: from 3.0 through 3.0.15, from 4.0 through 4.0.3. Users are recommended to upgrade to version 3.0.16 / 4.0.4, which fix this issue.
How severe is CVE-2026-23794?: CVE-2026-23794 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-23794 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23794?: CVE-2026-23794 affects Apache Syncope. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23794?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23794 have an EU (EUVD) identifier?: Yes. CVE-2026-23794 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5265.
When was CVE-2026-23794 published?: CVE-2026-23794 was published on 2026-02-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*

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