CVE-2026-42952 Hydro-Québec Le Circuit Electrique charging station backend Improper Restriction of Excessive Authentication Attempts
Attackers can cause denial of service against Hydro-Québec charging stations by exploiting the lack of authentication attempt throttling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-42952?
CVE-2026-42952 is a high-severity denial of service vulnerability in Hydro-Québec Le Circuit Electrique charging station backend, published on 10 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Previously, there was no throttling on repeated authentication attempts to the charging station backend, which could allow an attacker to execute a denial-of-service attack.
Weakness: CWE-307
Which versions are affected by CVE-2026-42952?
How do I fix CVE-2026-42952?
No fix has been published for CVE-2026-42952 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-42952 being exploited?
There is no known exploitation of CVE-2026-42952 in the wild and no public exploit code.
Sources
Also known as GHSA-88vc-rc72-29f3.