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CVE-2026-25632

Waterfutures Epyt-flow insecure deserialization

10.0 CRITICALEPSS 1.42%
  1. Published6 Feb 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Waterfutures Epyt-flow< 0.16.1

Remediation

Fixed in
Waterfutures Epyt-flow≥ 0.16.1

References

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Frequently asked

Is CVE-2026-25632 being actively exploited?

CVE-2026-25632 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.42%.

How severe is CVE-2026-25632?

CVE-2026-25632 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 1.42% probability of exploitation.

Which products are affected by CVE-2026-25632?

Affected products include Waterfutures Epyt-flow.

How do I fix CVE-2026-25632?

Upgrade affected software to a fixed version, for example Waterfutures Epyt-flow 0.16.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-25632 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.