How severe is CVE-2020-18457?

CVE-2020-18457 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-18457 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-18457?

CVE-2020-18457 affects Bycms Project Bycms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-18457?

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

When was CVE-2020-18457 published?

CVE-2020-18457 was published on 2021-08-12 and last updated on 2026-06-17.

CVE-2020-18457

CVE-2020-18457 is a medium-severity vulnerability in Bycms Project Bycms 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-352.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 6.0
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Bycms Project Bycms
Published: 2021-08-12
Last modified: 2026-06-17

Description

Cross Site Request Forgery (CSRF) vulnerability exists in bycms v1.3.0 that can add an admin account via admin.php/ucenter/add.html.

Frequently asked questions

What is CVE-2020-18457?: Cross Site Request Forgery (CSRF) vulnerability exists in bycms v1.3.0 that can add an admin account via admin.php/ucenter/add.html.
How severe is CVE-2020-18457?: CVE-2020-18457 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-18457 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-18457?: CVE-2020-18457 affects Bycms Project Bycms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-18457?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-18457 published?: CVE-2020-18457 was published on 2021-08-12 and last updated on 2026-06-17.

References

https://github.com/hillerlin/bycms/issues/3

Affected products (1)

cpe:2.3:a:bycms_project:bycms:1.3.0:*:*:*:*:*:*:*

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