CVE-2026-31831
HighPublic exploitTautulli: Unauthenticated Path Traversal in /newsletter/image/images endpoint
Published Mar 30, 2026 · Updated Aug 12, 2026 · Also known as GHSA-xp55-2pf4-fv8m
Key Facts
Patch immediately- CVE-2026-31831 is a high-severity vulnerability (CVSS 8.7 v4) affecting Tautulli.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 1.9% probability of exploitation in the next 30 days.
- Fixed versions are available, including Tautulli 2.17.0.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
CVSS v4
8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (30-day exploit likelihood)
1.9%
Higher than 78.9% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
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Description
Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to version 2.17.0, the /newsletter/image/images API endpoint is vulnerable to path traversal, allowing unauthenticated attackers to read arbitrary files from the application server's filesystem. This issue has been patched in version 2.17.0.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| TautulliTautulli | >= < 2.17.0 | 2.17.0 |
Patched Releases
Tautulli
2.17.0
Timeline
Publicly disclosed
Mar 30, 2026
Last updated
Aug 12, 2026
Weakness Type
- CWE-23 Relative Path Traversal
References
FAQ
Common Questions.
Tautulli is a Python based monitoring and tracking tool for Plex Media Server.
Affected: Tautulli versions >= < 2.17.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Tautulli 2.17.0.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
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