How severe is CVE-2023-36520?

CVE-2023-36520 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2023-36520 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-36520?

CVE-2023-36520 affects Zackgrossbart Editorial Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-36520?

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

When was CVE-2023-36520 published?

CVE-2023-36520 was published on 2023-12-20 and last updated on 2026-06-17.

CVE-2023-36520

CVE-2023-36520 is a medium-severity vulnerability in Zackgrossbart Editorial Calendar with a CVSS 3.x base score of 5.4. 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-639.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Zackgrossbart Editorial Calendar
Published: 2023-12-20
Last modified: 2026-06-17

Description

Authorization Bypass Through User-Controlled Key vulnerability in MarketingFire Editorial Calendar.This issue affects Editorial Calendar: from n/a through 3.7.12.

Frequently asked questions

What is CVE-2023-36520?: Authorization Bypass Through User-Controlled Key vulnerability in MarketingFire Editorial Calendar.This issue affects Editorial Calendar: from n/a through 3.7.12.
How severe is CVE-2023-36520?: CVE-2023-36520 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2023-36520 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-36520?: CVE-2023-36520 affects Zackgrossbart Editorial Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-36520?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-36520 published?: CVE-2023-36520 was published on 2023-12-20 and last updated on 2026-06-17.

References

https://patchstack.com/database/vulnerability/editorial-calendar/wordpress-editorial-calendar-plugin-3-7-12-insecure-direct-object-references-idor-vulnerability?_s_id=cve

Affected products (1)

cpe:2.3:a:zackgrossbart:editorial_calendar:*:*:*:*:*:wordpress:*:*

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