CVE-2026-49995

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (46th percentile of EPSS-scored CVEs). 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
Elevated
4.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 4.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to 2.17.2, the newsletter cron field stored in the newsletters table is inserted by data/interfaces/default/newsletter_config.html into a JavaScript string without safe JSON encoding. An administrator or caller with the Tautulli API key can store a crafted cron value, and an administrator who later opens the newsletter configuration modal passively triggers script execution in the Tautulli web context. The stored value persists in the database and can continue to execute after credential rotation until it is removed. This issue is fixed in version 2.17.2.

CVSS v3
4.8
EG Score
4.8MEDIUMmedium confidence
EG Risk
38
EG Risk 38/100CISA SSVC

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
Severity48% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 21, 2026

Last Modified

September 22, 2026

Advisory Details (3)

Auto-updated Sep 21, 2026
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 12761b2d01e7 (Tautulli/Tautulli)

Patch available: Tautulli/Tautulli v2.17.2 (contains commit 12761b2d01e7)

https://github.com/Tautulli/Tautulli/commit/12761b2d01e78f22e54e8ad8d3133931147cbb77
github Patch Available

Stored Cross-Site Scripting (XSS) in the newsletter cron value · Advisory · Tautulli/Tautulli · GitHub

https://github.com/Tautulli/Tautulli/security/advisories/GHSA-r6pg-vqxj-v75j

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 26× 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. 2026-10-05 11:03 UTCEG score recompute
  2. 2026-10-04 23:22 UTCEPSS rescore
  3. 2026-10-03 15:29 UTCEG score recompute
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-01 19:54 UTCEG score recompute
  6. 2026-10-01 19:50 UTCEPSS rescore
  7. 2026-09-30 22:07 UTCEG score recompute
  8. 2026-09-30 15:03 UTCEPSS rescore
  9. 2026-09-30 00:20 UTCEG score recompute
  10. 2026-09-28 22:54 UTCEG score recompute
  11. 2026-09-28 13:51 UTCEPSS rescore
  12. 2026-09-28 01:05 UTCEG score recompute
  13. 2026-09-27 13:48 UTCEPSS rescore
  14. 2026-09-27 03:18 UTCEG score recompute
  15. 2026-09-26 15:59 UTCEPSS rescore
  16. 2026-09-26 05:30 UTCEG score recompute
  17. 2026-09-26 00:27 UTCEPSS rescore
  18. 2026-09-25 07:42 UTCEG score recompute
  19. 2026-09-24 09:55 UTCEG score recompute
  20. 2026-09-23 17:53 UTCEPSS rescore
  21. 2026-09-23 12:08 UTCEG score recompute
  22. 2026-09-22 14:20 UTCEG score recompute
  23. 2026-09-22 13:46 UTCEG score recompute
  24. 2026-09-21 20:18 UTCEG score recompute
  25. 2026-09-21 19:20 UTCEG score recompute
Show 1 more
  1. 2026-09-21 19:20 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-49995?
CVE-2026-49995 is a medium 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 newsletter cron field stored in the newsletters table is inserted by data/interfaces/default/newsletter_config.html into a JavaScript string without safe JSON encoding. An administrator or caller…
When was CVE-2026-49995 disclosed?
CVE-2026-49995 was first published on September 21, 2026, with the most recent update on September 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49995 actively exploited?
CVE-2026-49995 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-49995?
CVE-2026-49995 has a CVSS base score of 4.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-49995?
A fix for CVE-2026-49995 is available: update to the fixed version the vendor names in its advisory.

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