CVE-2026-5659Public exploitNetwork attack vector

Code execution via untrusted pickle deserialization

Published Apr 6, 2026 · Updated Apr 6, 2026

Code execution in pytries datrie 0.8.0 through 0.8.3 allows attackers to run Python code by loading a crafted trie file. Trie.load, Trie.read, and Trie.setstate pass the pickle data appended after a valid trie structure directly to pickle.load without restricting reconstructed objects. Exploitation requires an application or user to load the attacker-supplied file, after which the payload executes with the affected Python process's privileges.

CVSS severity6.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in pytries datrie 0.8.0 through 0.8.3 allows attackers to run Python code by loading a crafted trie file. Trie.load, Trie.read, and Trie.setstate pass the pickle data appended after a valid trie structure directly to pickle.load without restricting reconstructed objects. Exploitation requires an application or user to load the attacker-supplied file, after which the payload executes with the affected Python process's privileges.

The record

CVE
CVE-2026-5659
Published
Apr 6, 2026
Updated
Apr 6, 2026
Vendor
pytries
Product
datrie
Classifications
CWE-502, CWE-20, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 6, 2026Record 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=0.8.0
  2. Affected versionversion=0.8.1
  3. Affected versionversion=0.8.2
  4. Affected versionversion=0.8.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

pytries · datrieversion=0.8.0; version=0.8.1; version=0.8.2; version=0.8.3

Published CVSS scores

7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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-502Deserialization of Untrusted Data
CWE-20Improper Input Validation
T1204.002Malicious File

Public exploit references

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

Technologies

Your stack

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Your stack

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