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CVE-2026-41065

HIGH Exploitation: PoC
8.9
CVSS 4.0
Description
Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Versions prior to 2.17.1 are vulnerable to remote code execution via the newsletter custom template directory feature. On a fresh install before the setup wizard is completed, all management endpoints are completely unauthenticated. An attacker can create a newsletter agent, point the custom template directory to an attacker-controlled SMB share serving a malicious Mako template, and trigger execution via the newsletter render endpoint, all with zero credentials and no local access to the target system. On a completed install with credentials configured, the same chain is exploitable by any admin. Version 2.17.1 fixes the issue.

Metadata

CVE ID
CVE-2026-41065
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-04-16 16:43 UTC
Published
2026-06-04 14:17 UTC
Last updated
2026-06-04 14:28 UTC
Primary CWE
CWE-1336
CWE-1336: Improper Neutralization of Special Elements Used i…
Vendor / Product
Tautulli / Tautulli
Sources
cve.org  ·  NVD

Severity & Metrics

8.9 HIGH CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
Tautulli Tautulli — < 2.17.1
Weakness (CWE)
CWESourceDescription
CWE-1336 cna CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.9 HIGH 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
References (2)
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