CVE-2026-28505

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to version 2.17.0, the str_eval() function in notification_handler.py implements a sandboxed eval() for notification text templates. The sandbox attempts to restrict callable names by inspecting code.co_names of the compiled code object. However, co_names only contains names from the outer code object. When a lambda expression is used, it creates a nested code object whose attribute accesses are stored in code.co_consts, NOT in code.co_names. The sandbox never inspects nested code objects. This issue has been patched in version 2.17.0.

CVSS v3 10.0 CRITICAL

10.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/Tautulli/Tautulli/releases/tag/v2.17.0	Release Notes
https://github.com/Tautulli/Tautulli/security/advisories/GHSA-m62j-gwm9-7p8m	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:tautulli:tautulli:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-30 20:16

Updated : 2026-06-17 10:28

NVD link : CVE-2026-28505

Mitre link : CVE-2026-28505

CVE.ORG link : CVE-2026-28505

JSON object : View

Products Affected

tautulli

tautulli

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

CWE-95

Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

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