# CVE-2026-25945: EV2GO ev2go.io Improper Restriction of Excessive Authentication Attempts

> Attackers can perform brute-force attacks or denial-of-service on EV2GO's WebSocket API due to missing authentication rate limits.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Feb 2026
- **Updated:** 31 Mar 2026
- **Also known as:** GHSA-j4fg-v368-8838

## What is CVE-2026-25945?

CVE-2026-25945 is a high-severity denial of service vulnerability in ev2go.io, published on 26 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-307 (Improper Restriction of Excessive Authentication Attempts)

## Which versions are affected by CVE-2026-25945?

It affects 1 product.


Products: Ev2go Ev2go.io.

## How do I fix CVE-2026-25945?

No fix has been published for CVE-2026-25945 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-25945 being exploited?

There is no known exploitation of CVE-2026-25945 in the wild and no public exploit code.

## Other vulnerabilities in ev2go.io

- [CVE-2026-24731](https://insights.sbomify.com/CVE-2026-24731/): EV2GO ev2go.io Missing Authentication for Critical Function (critical 9.3)
- [CVE-2026-20895](https://insights.sbomify.com/CVE-2026-20895/): EV2GO ev2go.io Insufficient Session Expiration (medium 6.9)
- [CVE-2026-22890](https://insights.sbomify.com/CVE-2026-22890/): EV2GO ev2go.io Insufficiently Protected Credentials (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-25945 and fix it if it is affected.

What it is: CVE-2026-25945 is a high-severity denial of service vulnerability in ev2go.io, published on 26 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-25945 in the wild and no public exploit code.

Affected product: ev2go.io. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-25945/ (Markdown: https://insights.sbomify.com/CVE-2026-25945/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-25945
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-25945
- OSV: https://osv.dev/vulnerability/CVE-2026-25945

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-25945/
Summaries are generated and may contain mistakes; the official description above is the record.