How severe is CVE-2023-5307?

CVE-2023-5307 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-5307 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5307?

CVE-2023-5307 affects Contest-gallery Contest Gallery. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-5307?

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

When was CVE-2023-5307 published?

CVE-2023-5307 was published on 2023-10-31 and last updated on 2026-06-17.

CVE-2023-5307

CVE-2023-5307 is a medium-severity vulnerability in Contest-gallery Contest Gallery with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Contest-gallery Contest Gallery
Published: 2023-10-31
Last modified: 2026-06-17

Description

The Photos and Files Contest Gallery WordPress plugin before 21.2.8.1 does not sanitise and escape some parameters, which could allow unauthenticated users to perform Cross-Site Scripting attacks via certain headers.

Frequently asked questions

What is CVE-2023-5307?: The Photos and Files Contest Gallery WordPress plugin before 21.2.8.1 does not sanitise and escape some parameters, which could allow unauthenticated users to perform Cross-Site Scripting attacks via certain headers.
How severe is CVE-2023-5307?: CVE-2023-5307 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-5307 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5307?: CVE-2023-5307 affects Contest-gallery Contest Gallery. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-5307?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-5307 published?: CVE-2023-5307 was published on 2023-10-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:contest-gallery:contest_gallery:*:*:*:*:*:wordpress:*:*

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