How severe is CVE-2026-31904?

CVE-2026-31904 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-2026-31904 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-31904?

CVE-2026-31904 affects Ctek Charge Portal. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-31904?

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-2026-31904 have an EU (EUVD) identifier?

Yes. CVE-2026-31904 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13855.

When was CVE-2026-31904 published?

CVE-2026-31904 was published on 2026-03-20 and last updated on 2026-06-17.

CVE-2026-31904

CVE-2026-31904 is a high-severity vulnerability in Ctek Charge Portal 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-307.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13855
Weakness: CWE-307
Affected product: Ctek Charge Portal
Published: 2026-03-20
Last modified: 2026-06-17

Description

The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks by suppressing or mis-routing legitimate charger telemetry, or conduct brute-force attacks to gain unauthorized access.

Frequently asked questions

What is CVE-2026-31904?: The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks by suppressing or mis-routing legitimate charger telemetry, or conduct brute-force attacks to gain unauthorized access.
How severe is CVE-2026-31904?: CVE-2026-31904 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-2026-31904 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-31904?: CVE-2026-31904 affects Ctek Charge Portal. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-31904?: 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-2026-31904 have an EU (EUVD) identifier?: Yes. CVE-2026-31904 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13855.
When was CVE-2026-31904 published?: CVE-2026-31904 was published on 2026-03-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ctek:charge_portal:-:*:*:*:*:*:*:*

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