November 14, 2026

CVE Watchtower

CVE-2026-124318treeio treeio Deserialization of Untrusted Data

NVD

Vulnerability Summary

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.
Severity Level
HIGH(8.6)
Published Date
Nov 7, 2026
Last Modified
Nov 10, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.56%Probability
Root Weakness (CWE)
CWE-502: Deserialization of Untrusted Data ↗
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
CVSS v4.0 Base Metrics — Score 8.6 (HIGH)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredHigh
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
Show CVSS v3.x metrics (score 7.2)
CVSS v3.1 Base Metrics — Score 7.2 (HIGH)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • treeio treeio <= 2.0
Patched Versions
  • treeio treeio 2.0

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is high.

  1. Check whether you run treeio treeio and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Nov 7, 2026Published
  • Nov 10, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 14, 2026 03:22 UTC