How severe is CVE-2026-6633?

CVE-2026-6633 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-6633 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6633?

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

Does CVE-2026-6633 have an EU (EUVD) identifier?

Yes. CVE-2026-6633 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23837.

When was CVE-2026-6633 published?

CVE-2026-6633 was published on 2026-04-20 and last updated on 2026-06-17.

CVE-2026-6633

CVE-2026-6633 is a low-severity vulnerability with a CVSS 3.x base score of 3.5. 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-79.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
CVSS v2: 4.0
CVSS v4: 2.0
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23837
Weakness: CWE-79
Published: 2026-04-20
Last modified: 2026-06-17

Description

A security flaw has been discovered in Yifang CMS up to 2.0.5. The impacted element is the function store of the file plugins/yifang_backend_account/logic/admin/L_rbac_admin.php of the component Extended Management Module. The manipulation of the argument Account results in cross site scripting. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-6633?: A security flaw has been discovered in Yifang CMS up to 2.0.5. The impacted element is the function store of the file plugins/yifang_backend_account/logic/admin/L_rbac_admin.php of the component Extended Management Module. The manipulation of the argument Account results in cross site scripting. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-6633?: CVE-2026-6633 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-6633 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-6633?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-6633 have an EU (EUVD) identifier?: Yes. CVE-2026-6633 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23837.
When was CVE-2026-6633 published?: CVE-2026-6633 was published on 2026-04-20 and last updated on 2026-06-17.

References

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