GHSA-74vm-8frp-7w68 · Severity: critical · Ecosystem: pip — EPyT-Flow vulnerable to unsafe JSON deserialization (__type__)
EPyT-Flow is a Python package designed for the easy generation of hydraulic and water quality scenario data of water distribution networks. Prior to 0.16.1, EPyT-Flow’s REST API parses attacker-controlled JSON request bodies using a custom deserializer (my_load_from_json) that supports a type field. When type is present, the deserializer dynamically imports an attacker-specified module/class and instantiates it with attacker-supplied arguments. This allows invoking dangerous classes such as subprocess.Popen, which can lead to OS command execution during JSON parsing. This also affects the loading of JSON files. This vulnerability is fixed in 0.16.1.
Conclusion & alert: CVE-2026-25632 is rated Moderate Risk (48.1/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.08%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-19 | 0.04% | 0.08% | +0.04% |
| 2 | 2026-02-18 | 0.11% | 0.04% | -0.06% |
| 3 | 2026-02-07 | — | 0.11% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 3.1 | CRITICAL |
|
3.9 | 6.0 | [email protected] |
GHSA-74vm-8frp-7w68 · Severity: critical · Ecosystem: pip — EPyT-Flow vulnerable to unsafe JSON deserialization (__type__)
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| waterfutures | epyt-flow | < 0.16.1 | cpe:2.3:a:waterfutures:epyt-flow:*:*:*:*:*:python:*:* |