CVE-2025-3982Public exploitNetwork attack vector

Runtime tampering via unchecked object-path traversal

Published Apr 27, 2025 · Updated Apr 28, 2025

Class pollution in Nortikin Sverchok 1.3.0 allows context-dependent attackers to tamper with Blender's Python runtime via a malicious model file. SvSetPropNodeMK2 accepts an unchecked object path, resolves dunder attributes through get_object, and writes attacker-controlled data into reachable runtime objects. A victim must load the crafted file and trigger its Set Property Mk2 node; the demonstrated chain rewrites Sverchok's gist API URL and exposes a GitHub token during export.

CVSS severity5.3
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Class pollution in Nortikin Sverchok 1.3.0 allows context-dependent attackers to tamper with Blender's Python runtime via a malicious model file. SvSetPropNodeMK2 accepts an unchecked object path, resolves dunder attributes through get_object, and writes attacker-controlled data into reachable runtime objects. A victim must load the crafted file and trigger its Set Property Mk2 node; the demonstrated chain rewrites Sverchok's gist API URL and exposes a GitHub token during export.

The record

CVE
CVE-2025-3982
Published
Apr 27, 2025
Updated
Apr 28, 2025
Vendor
Nortikin
Product
Sverchok
Classifications
CWE-1321, CWE-94, T1203, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nortikin · Sverchokversion=1.3.0

Published CVSS scores

4.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0VulDB CNAAV:N/AC:L/Au:S/C:N/I:P/A:N
8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
5.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1203Exploitation for Client Execution
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo