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CVE-2026-43984

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Versions prior to 2.17.1 expose `log_js_errors` to any authenticated user, including guest users when guest access is enabled. The endpoint writes attacker-controlled strings directly into the main application log. The administrator-only `logFile` view then reads that log file and embeds it into an HTML response without escaping. This creates a stored cross-site scripting condition where a low-privilege guest can inje
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:94464e451dab5b89fe53d7d28587bf6a2598df9d5b564d5e3f7230fa8498df9b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"Tautulli","vendor":"Tautulli","versions":[{"status":"affected","version":"< 2.17.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:29a863d71719470a55b057f2be033470d43f7cd4fe45bc862672f02f27b734f0 · sha256:4e8259d577ec1bf6… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.9,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:29a863d71719470a55b057f2be033470d43f7cd4fe45bc862672f02f27b734f0 · sha256:4e8259d577ec1bf6… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:29a863d71719470a55b057f2be033470d43f7cd4fe45bc862672f02f27b734f0 · sha256:4e8259d577ec1bf6… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/Tautulli/Tautulli/releases/tag/v2.17.1","tags":["x_refsource_MISC"],"url":"https://github.com/Tautulli/Tautulli/releases/tag/v2.17.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:29a863d71719470a55b057f2be033470d43f7cd4fe45bc862672f02f27b734f0 · sha256:4e8259d577ec1bf6… · /containers/cna/references/1
{"name":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-f4j7-pjwc-4jrr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-f4j7-pjwc-4jrr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:29a863d71719470a55b057f2be033470d43f7cd4fe45bc862672f02f27b734f0 · sha256:4e8259d577ec1bf6… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-f4j7-pjwc-4jrr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:29a863d71719470a55b057f2be033470d43f7cd4fe45bc862672f02f27b734f0 · sha256:4e8259d577ec1bf6… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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