How severe is CVE-2026-54479?

CVE-2026-54479 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-54479 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-54479?

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.

Does CVE-2026-54479 have an EU (EUVD) identifier?

Yes. CVE-2026-54479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39566.

When was CVE-2026-54479 published?

CVE-2026-54479 was published on 2026-06-25 and last updated on 2026-06-26.

CVE-2026-54479

CVE-2026-54479 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. 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-613.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v4: 6.9
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39566
Weakness: CWE-613
Published: 2026-06-25
Last modified: 2026-06-26

Description

The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This implementation results in predictable session identifiers. This vulnerability may allow unauthorized users to authenticate as other users or enable a malicious actor to cause a denial-of-service condition by overwhelming the backend with valid session requests.

Frequently asked questions

What is CVE-2026-54479?: The WebSocket backend uses charging station identifiers to uniquely associate sessions but allows multiple endpoints to connect using the same session identifier. This implementation results in predictable session identifiers. This vulnerability may allow unauthorized users to authenticate as other users or enable a malicious actor to cause a denial-of-service condition by overwhelming the backend with valid session requests.
How severe is CVE-2026-54479?: CVE-2026-54479 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-54479 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-54479?: 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.
Does CVE-2026-54479 have an EU (EUVD) identifier?: Yes. CVE-2026-54479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39566.
When was CVE-2026-54479 published?: CVE-2026-54479 was published on 2026-06-25 and last updated on 2026-06-26.

References

Other CWE-613 (Insufficient Session Expiration) vulnerabilities

CVE-2024-8888 — Critical (CVSS 10.0): An attacker with access to the network where CIRCUTOR Q-SMT is located in its firmware version 1.0.4, could steal the…
CVE-2026-46455 — Critical (CVSS 9.8): Insufficient Session Expiration vulnerability in Apache Camel Keycloak Component. The camel-keycloak security helper…
CVE-2026-21622 — Critical (CVSS 9.8): Insufficient Session Expiration vulnerability in hexpm hexpm/hexpm ('Elixir.Hexpm.Accounts.PasswordReset' module)…
CVE-2025-59786 — Critical (CVSS 9.8): 2N Access Commander version 3.4.2 and prior improperly invalidates session tokens, allowing multiple session cookies to…
CVE-2026-26342 — Critical (CVSS 9.8): Tattile Smart+, Vega, and Basic device families firmware versions 1.181.5 and prior implement an authentication token…
CVE-2026-1435 — Critical (CVSS 9.8): Not properly invalidated session vulnerability in Graylog Web Interface, version 2.2.3, due to incorrect management of…

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