How severe is CVE-2020-5615?

CVE-2020-5615 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-5615 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5615?

CVE-2020-5615 primarily affects Calendar01 Project Calendar01. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-5615?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-5615 published?

CVE-2020-5615 was published on 2020-08-04 and last updated on 2026-06-17.

CVE-2020-5615

CVE-2020-5615 is a high-severity vulnerability in Calendar01 Project Calendar01 with a CVSS 3.x base score of 8.8. 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: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Calendar01 Project Calendar01
Published: 2020-08-04
Last modified: 2026-06-17

Description

Cross-site request forgery (CSRF) vulnerability in [Calendar01] free edition ver1.0.0 and [Calendar02] free edition ver1.0.0 allows remote attackers to hijack the authentication of administrators via unspecified vectors.

Frequently asked questions

What is CVE-2020-5615?: Cross-site request forgery (CSRF) vulnerability in [Calendar01] free edition ver1.0.0 and [Calendar02] free edition ver1.0.0 allows remote attackers to hijack the authentication of administrators via unspecified vectors.
How severe is CVE-2020-5615?: CVE-2020-5615 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-5615 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5615?: CVE-2020-5615 primarily affects Calendar01 Project Calendar01. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-5615?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-5615 published?: CVE-2020-5615 was published on 2020-08-04 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:calendar01_project:calendar01:1.0.0:*:*:*:free:*:*:*
cpe:2.3:a:calendar02_project:calendar02:1.0.0:*:*:*:free:*:*:*

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