How severe is CVE-2025-8266?

CVE-2025-8266 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-8266 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-8266?

CVE-2025-8266 affects Chancms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-8266?

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

Does CVE-2025-8266 have an EU (EUVD) identifier?

Yes. CVE-2025-8266 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22863.

When was CVE-2025-8266 published?

CVE-2025-8266 was published on 2025-07-28 and last updated on 2026-06-17.

CVE-2025-8266

CVE-2025-8266 is a medium-severity vulnerability in Chancms with a CVSS 3.x base score of 6.3. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22863
Weakness: CWE-20
Affected product: Chancms
Published: 2025-07-28
Last modified: 2026-06-17

Description

A vulnerability has been found in yanyutao0402 ChanCMS up to 3.1.2 and classified as critical. Affected by this vulnerability is the function getArticle of the file app/modules/cms/controller/collect.js. The manipulation of the argument targetUrl leads to deserialization. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 3.1.3 is able to address this issue. It is recommended to upgrade the affected component.

Frequently asked questions

What is CVE-2025-8266?: A vulnerability has been found in yanyutao0402 ChanCMS up to 3.1.2 and classified as critical. Affected by this vulnerability is the function getArticle of the file app/modules/cms/controller/collect.js. The manipulation of the argument targetUrl leads to deserialization. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 3.1.3 is able to address this issue. It is recommended to upgrade the affected component.
How severe is CVE-2025-8266?: CVE-2025-8266 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-8266 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-8266?: CVE-2025-8266 affects Chancms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-8266?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-8266 have an EU (EUVD) identifier?: Yes. CVE-2025-8266 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22863.
When was CVE-2025-8266 published?: CVE-2025-8266 was published on 2025-07-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:chancms:chancms:*:*:*:*:*:*:*:*

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