CVE-2026-28505: Tautulli is a Python based monitoring and tracking tool for Plex Media Server

Q: How do I fix CVE-2026-28505?

tautulli: upgrade to 2.17.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-28505 being exploited?

CVE-2026-28505 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-28505 affect?

CVE-2026-28505 affects tautulli. Severity is critical (CVSS 10.0). 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 t

Q: How urgent is CVE-2026-28505?

Priority 56/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 10.0REMOTEUPGRADE

CVE-2026-28505 is a critical-severity flaw (CVSS 10.0) affecting tautulli. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 ob

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-94, CWE-95
Published	2026-03-30
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: tautulli

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-30 20:16 UTCPublished CVE record published
2026-06-17 10:28 UTCUpdated Record last modified

tautulli tautulli UPGRADE

Affected: < 2.17.0

Fixed in: 2.17.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tautulli || rpm -q tautulli || tautulli --version

2. UPGRADE to 2.17.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tautulli

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tautulli

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora ELN · perl-Encode · FIXED · 3.25-528.eln159 · FEDORA-2026-79991d0238 · source

sudo dnf upgrade --advisory=FEDORA-2026-79991d0238

Fedora 46 · fonttools · FIXED · 4.68.0-1.fc46 · FEDORA-2026-65d6c01c75 · source

sudo dnf upgrade --advisory=FEDORA-2026-65d6c01c75

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/Tautulli/Tautulli/security/advisories/GHSA-m62j-gwm9-7p8m

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-28505?

tautulli: upgrade to 2.17.0. Exact commands for each OS are on this page.

Is CVE-2026-28505 being exploited?

CVE-2026-28505 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-28505 affect?

CVE-2026-28505 affects tautulli. Severity is critical (CVSS 10.0). 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 t

How urgent is CVE-2026-28505?

Priority 56/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Python vulnerabilities · Plex vulnerabilities

Related CVEs

CVE-2026-32275 CRITICAL 9.1 UPGRADE Tautulli is a Python based monitoring and tracking tool for Plex Media Server
CVE-2026-31831 HIGH 7.5 UPGRADE Tautulli is a Python based monitoring and tracking tool for Plex Media Server
CVE-2026-31804 MEDIUM 4.0 UPGRADE Tautulli is a Python based monitoring and tracking tool for Plex Media Server
CVE-2026-31799 MEDIUM 4.9 UPGRADE Tautulli is a Python based monitoring and tracking tool for Plex Media Server

References

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