How severe is CVE-2023-4956?

CVE-2023-4956 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-4956 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-2023-4956?

CVE-2023-4956 affects Redhat Quay. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4956?

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

When was CVE-2023-4956 published?

CVE-2023-4956 was published on 2023-11-07 and last updated on 2026-06-17.

CVE-2023-4956

CVE-2023-4956 is a medium-severity vulnerability in Redhat Quay with a CVSS 3.x base score of 6.5. 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-1021.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1021
Affected product: Redhat Quay
Published: 2023-11-07
Last modified: 2026-06-17

Description

A flaw was found in Quay. Clickjacking is when an attacker uses multiple transparent or opaque layers to trick a user into clicking on a button or link on another page when they intend to click on the top-level page. During the pentest, it has been detected that the config-editor page is vulnerable to clickjacking. This flaw allows an attacker to trick an administrator user into clicking on buttons on the config-editor panel, possibly reconfiguring some parts of the Quay instance.

Frequently asked questions

What is CVE-2023-4956?: A flaw was found in Quay. Clickjacking is when an attacker uses multiple transparent or opaque layers to trick a user into clicking on a button or link on another page when they intend to click on the top-level page. During the pentest, it has been detected that the config-editor page is vulnerable to clickjacking. This flaw allows an attacker to trick an administrator user into clicking on buttons on the config-editor panel, possibly reconfiguring some parts of the Quay instance.
How severe is CVE-2023-4956?: CVE-2023-4956 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-4956 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-2023-4956?: CVE-2023-4956 affects Redhat Quay. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4956?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4956 published?: CVE-2023-4956 was published on 2023-11-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redhat:quay:3.0.0:*:*:*:*:*:*:*

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