How severe is CVE-2023-5590?

CVE-2023-5590 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 none, integrity none, and availability high.

Is CVE-2023-5590 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5590?

CVE-2023-5590 affects Selenium. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-5590?

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-2023-5590 published?

CVE-2023-5590 was published on 2023-10-15 and last updated on 2026-06-17.

CVE-2023-5590

CVE-2023-5590 is a high-severity vulnerability in Selenium 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. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Selenium
Published: 2023-10-15
Last modified: 2026-06-17

Description

NULL Pointer Dereference in GitHub repository seleniumhq/selenium prior to 4.14.0.

Frequently asked questions

What is CVE-2023-5590?: NULL Pointer Dereference in GitHub repository seleniumhq/selenium prior to 4.14.0.
How severe is CVE-2023-5590?: CVE-2023-5590 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 none, integrity none, and availability high.
Is CVE-2023-5590 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5590?: CVE-2023-5590 affects Selenium. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-5590?: 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-2023-5590 published?: CVE-2023-5590 was published on 2023-10-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:selenium:selenium:*:*:*:*:*:*:*:*

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