How severe is CVE-2023-34034?

CVE-2023-34034 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2023-34034 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-34034?

CVE-2023-34034 affects Vmware Spring Security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-34034?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-34034 published?

CVE-2023-34034 was published on 2023-07-19 and last updated on 2026-06-17.

CVE-2023-34034

CVE-2023-34034 is a critical-severity vulnerability in Vmware Spring Security with a CVSS 3.x base score of 9.1. 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-281.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-281
Affected product: Vmware Spring Security
Published: 2023-07-19
Last modified: 2026-06-17

Description

Using "**" as a pattern in Spring Security configuration for WebFlux creates a mismatch in pattern matching between Spring Security and Spring WebFlux, and the potential for a security bypass.

Frequently asked questions

What is CVE-2023-34034?: Using "**" as a pattern in Spring Security configuration for WebFlux creates a mismatch in pattern matching between Spring Security and Spring WebFlux, and the potential for a security bypass.
How severe is CVE-2023-34034?: CVE-2023-34034 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2023-34034 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-34034?: CVE-2023-34034 affects Vmware Spring Security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-34034?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-34034 published?: CVE-2023-34034 was published on 2023-07-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*

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