How severe is CVE-2023-6203?

CVE-2023-6203 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-6203 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6203?

CVE-2023-6203 affects Stellarwp The Events Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-6203?

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-2023-6203 published?

CVE-2023-6203 was published on 2023-12-18 and last updated on 2026-06-17.

CVE-2023-6203

CVE-2023-6203 is a high-severity vulnerability in Stellarwp The Events Calendar with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Stellarwp The Events Calendar
Published: 2023-12-18
Last modified: 2026-06-17

Description

The Events Calendar WordPress plugin before 6.2.8.1 discloses the content of password protected posts to unauthenticated users via a crafted request

Frequently asked questions

What is CVE-2023-6203?: The Events Calendar WordPress plugin before 6.2.8.1 discloses the content of password protected posts to unauthenticated users via a crafted request
How severe is CVE-2023-6203?: CVE-2023-6203 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-6203 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6203?: CVE-2023-6203 affects Stellarwp The Events Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-6203?: 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-2023-6203 published?: CVE-2023-6203 was published on 2023-12-18 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/229273e6-e849-447f-a95a-0730969ecdae

Affected products (1)

cpe:2.3:a:stellarwp:the_events_calendar:*:*:*:*:*:wordpress:*:*

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