How severe is CVE-2026-25632?

CVE-2026-25632 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-25632 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25632?

CVE-2026-25632 affects Waterfutures Epyt-flow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25632?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-25632 have an EU (EUVD) identifier?

Yes. CVE-2026-25632 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5576.

When was CVE-2026-25632 published?

CVE-2026-25632 was published on 2026-02-06 and last updated on 2026-06-17.

CVE-2026-25632

CVE-2026-25632 is a critical-severity vulnerability in Waterfutures Epyt-flow with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5576
Weakness: CWE-502
Affected product: Waterfutures Epyt-flow
Published: 2026-02-06
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-25632?: 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.
How severe is CVE-2026-25632?: CVE-2026-25632 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-25632 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25632?: CVE-2026-25632 affects Waterfutures Epyt-flow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25632?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-25632 have an EU (EUVD) identifier?: Yes. CVE-2026-25632 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5576.
When was CVE-2026-25632 published?: CVE-2026-25632 was published on 2026-02-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:waterfutures:epyt-flow:*:*:*:*:*:python:*:*

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