How severe is CVE-2026-41838?

CVE-2026-41838 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-41838 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41838?

CVE-2026-41838 affects Vmware Spring Framework. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41838?

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

Does CVE-2026-41838 have an EU (EUVD) identifier?

Yes. CVE-2026-41838 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35325.

When was CVE-2026-41838 published?

CVE-2026-41838 was published on 2026-06-09 and last updated on 2026-06-27.

CVE-2026-41838

CVE-2026-41838 is a medium-severity vulnerability in Vmware Spring Framework with a CVSS 3.x base score of 4.8. 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-330.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35325
Weakness: CWE-330
Affected product: Vmware Spring Framework
Published: 2026-06-09
Last modified: 2026-06-27

Description

IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which may be possible to exploit in combination with inadequate authorization rules. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

Frequently asked questions

What is CVE-2026-41838?: IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which may be possible to exploit in combination with inadequate authorization rules. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.
How severe is CVE-2026-41838?: CVE-2026-41838 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-41838 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41838?: CVE-2026-41838 affects Vmware Spring Framework. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41838?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-41838 have an EU (EUVD) identifier?: Yes. CVE-2026-41838 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35325.
When was CVE-2026-41838 published?: CVE-2026-41838 was published on 2026-06-09 and last updated on 2026-06-27.

References

https://spring.io/security/cve-2026-41838

Affected products (1)

cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*

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