CVE-2026-6561
CVE-2026-6561 is a medium-severity vulnerability with a CVSS 3.x base score of 4.7. 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-284.
Key facts
- Severity: Medium (CVSS 3.x base score 4.7)
- CVSS v2: 5.8
- CVSS v4: 2.0
- EPSS exploit prediction: 0% (20th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-23686
- Weakness: CWE-284
- Published:
- Last modified:
Description
A vulnerability was detected in EyouCMS up to 1.7.1. This issue affects the function edit_adminlogo of the file application/admin/controller/Index.php. Performing a manipulation of the argument filename results in unrestricted upload. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Frequently asked questions
- What is CVE-2026-6561?
- A vulnerability was detected in EyouCMS up to 1.7.1. This issue affects the function edit_adminlogo of the file application/admin/controller/Index.php. Performing a manipulation of the argument filename results in unrestricted upload. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- How severe is CVE-2026-6561?
- CVE-2026-6561 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
- Is CVE-2026-6561 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-6561?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-6561 have an EU (EUVD) identifier?
- Yes. CVE-2026-6561 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23686.
- When was CVE-2026-6561 published?
- CVE-2026-6561 was published on 2026-04-19 and last updated on 2026-06-17.
References
- https://github.com/zzk6th/my-cve-notes/blob/main/EyouCMS%20Arbitrary%20File%20Copy%20Vulnerability%20in%20edit_adminlogo()%20Leading%20to%20Sensitive%20Information%20Disclosure.md
- https://vuldb.com/submit/788038
- https://vuldb.com/vuln/358198
- https://vuldb.com/vuln/358198/cti
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