CVE-2026-28505

CRITICAL

10.0

Description

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.

CVE Details

CVSS v3.1 Score10.0

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/30/2026

Last Modified4/2/2026

Sourcenvd

Honeypot Sightings0

Affected Products

tautulli:tautulli

Weaknesses (CWE)

CWE-94CWE-95

References

https://github.com/Tautulli/Tautulli/releases/tag/v2.17.0(security-advisories@github.com)

https://github.com/Tautulli/Tautulli/security/advisories/GHSA-m62j-gwm9-7p8m(security-advisories@github.com)

IOC Correlations

No correlations recorded

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