How severe is CVE-2026-20748?

CVE-2026-20748 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-2026-20748 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.

What products are affected by CVE-2026-20748?

CVE-2026-20748 affects Everon Api.everon.io. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-20748?

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-2026-20748 have an EU (EUVD) identifier?

Yes. CVE-2026-20748 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10031.

When was CVE-2026-20748 published?

CVE-2026-20748 was published on 2026-03-06 and last updated on 2026-06-17.

CVE-2026-20748

CVE-2026-20748 is a high-severity vulnerability in Everon Api.everon.io 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-2026-10031
Weakness: CWE-613
Affected product: Everon Api.everon.io
Published: 2026-03-06
Last modified: 2026-06-17

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 and enables session hijacking or shadowing, where the most recent connection displaces the legitimate charging station and receives backend commands intended for that station. 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-2026-20748?: 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 and enables session hijacking or shadowing, where the most recent connection displaces the legitimate charging station and receives backend commands intended for that station. 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-2026-20748?: CVE-2026-20748 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-2026-20748 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.
What products are affected by CVE-2026-20748?: CVE-2026-20748 affects Everon Api.everon.io. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-20748?: 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-2026-20748 have an EU (EUVD) identifier?: Yes. CVE-2026-20748 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10031.
When was CVE-2026-20748 published?: CVE-2026-20748 was published on 2026-03-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:everon:api.everon.io:*:*:*:*:*:*:*:*

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