CVE-2026-52835

HIGHPre-NVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 54% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this weekElevated
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.0Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to 2.17.2, the import_config handler and the database_file branch of import_database in plexpy/webserve.py join the attacker-controlled config_file.filename or database_file.filename directly to CACHE_DIR without basename reduction or a containment check. An administrator or caller with the instance API key can submit a multipart filename containing parent-directory segments, causing the upload to be created or overwritten outside CACHE_DIR before file-content validation runs. The write is limited to paths permitted to the Tautulli process, but it can enable configuration tampering, service disruption, or code execution. This issue is fixed in version 2.17.2.

CVSS v3
7.0
EG Score
7.0(medium)
EG Risk
48(Track)
EG Risk 48/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity70% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
46%
KEV
Not listed

Published

September 21, 2026

Last Modified

September 21, 2026

Advisory Details (3)

Auto-updated Sep 21, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

Tautulli v2.17.2

Patch available: Tautulli/Tautulli v2.17.2

https://github.com/Tautulli/Tautulli/releases/tag/v2.17.2
github_commit Patch Available

commit 8c7c1a5ab09a (Tautulli/Tautulli)

Patch available: Tautulli/Tautulli v2.17.2 (contains commit 8c7c1a5ab09a)

https://github.com/Tautulli/Tautulli/commit/8c7c1a5ab09a6cca00aec995df07ce24680e7f31
github Patch Available🟡 PoC Available

Tautulli: Path traversal / arbitrary file write via unsanitized upload filename in import_config and import_database · Advisory · Tautulli/Tautulli · GitHub

https://github.com/Tautulli/Tautulli/security/advisories/GHSA-8ww5-pp25-3jm8

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-24 22:58 UTCEG score recompute
  2. 2026-09-23 21:55 UTCEG score recompute
  3. 2026-09-23 17:53 UTCEPSS rescore
  4. 2026-09-22 21:07 UTCEG score recompute
  5. 2026-09-21 20:18 UTCEG score recompute
  6. 2026-09-21 20:00 UTCEG score recompute
  7. 2026-09-21 19:20 UTCEG score recompute
  8. 2026-09-21 19:20 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-52835?
CVE-2026-52835 is a high vulnerability published on September 21, 2026. Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to 2.17.2, the importconfig handler and the databasefile branch of importdatabase in plexpy/webserve.py join the attacker-controlled configfile.filename or databasefile.filename directly to CACHEDIR without…
When was CVE-2026-52835 disclosed?
CVE-2026-52835 was first published in the National Vulnerability Database on September 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52835 actively exploited?
CVE-2026-52835 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.1% of all scored CVEs.
What is the CVSS score of CVE-2026-52835?
CVE-2026-52835 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2026-52835?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52835, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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