Deserialization in Treeio
CVE-2026-124318
Treeio through 2.0 contains an insecure deserialization vulnerability in UpdateRecord.get_format_strings and ModuleSetting.loads that allows staff users to execute code via unverified pickle data. Attackers can store a crafted base64 pickle payload in an UpdateRecord format_strings field through the Django admin, executing Python code as the web server user when news feeds render.
Vulnerability class: Insecure Deserialization
Published .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/treeio/treeio (product)
- github.com/treeio/treeio/blob/bae3115f4015aad2cbc5ab45572232ceec990495/treeio/c… (technical-description)
- github.com/treeio/treeio/blob/bae3115f4015aad2cbc5ab45572232ceec990495/treeio/c… (technical-description)
- github.com/treeio/treeio/issues/165 (issue-tracking)
- www.vulncheck.com/advisories/treeio-through-2.0-insecure-deserialization-rce-vi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-124318?
- CVE-2026-124318 is a high-severity vulnerability in Treeio, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2026-11-07.
- How severe is CVE-2026-124318?
- High severity. CVSS v3 base score is 7.2 out of 10.