Out-of-bounds Write Affecting EVerest/everest-core package, versions [,2026.02.0-rc1)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-EVERESTEVERESTCORE-15809108
- published29 Mar 2026
- disclosed26 Mar 2026
- creditUnknown
Introduced: 26 Mar 2026
CVE-2026-27815 (opens in a new tab)How to fix?
Upgrade EVerest/everest-core to version 2026.02.0-rc1 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write via the handle_session_setup function. An attacker can corrupt adjacent EVSE state or cause a crash by sending oversized MQTT Cmd payloads when schema validation is disabled.