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CVE-2026-43986

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Versions prior to 2.17.1 expose a public `/image/<hash>` route that resolves attacker-controlled entries from `image_hash_lookup` and replays them through the same server-side image fetch logic used by authenticated image proxying. A low-privilege guest user can seed a malicious external image URL into this lookup table and then trigger server-side fetches through a fully unauthenticated endpoint. This turns an authen
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2418e562d37b8ecb0c9b527f5f83c028070f5f04c8328b657f61ca720c01a465
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:de67bcf05e05eb4b978cec736192ea2eea1457962b226398850f7e3a3c56fc98 · sha256:51f7a0e89127d04a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":9.9,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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:de67bcf05e05eb4b978cec736192ea2eea1457962b226398850f7e3a3c56fc98 · sha256:51f7a0e89127d04a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:de67bcf05e05eb4b978cec736192ea2eea1457962b226398850f7e3a3c56fc98 · sha256:51f7a0e89127d04a… · /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:de67bcf05e05eb4b978cec736192ea2eea1457962b226398850f7e3a3c56fc98 · sha256:51f7a0e89127d04a… · /containers/cna/references/1
{"name":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-m6j6-rc2c-8vpm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-m6j6-rc2c-8vpm"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:de67bcf05e05eb4b978cec736192ea2eea1457962b226398850f7e3a3c56fc98 · sha256:51f7a0e89127d04a… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-m6j6-rc2c-8vpm"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:de67bcf05e05eb4b978cec736192ea2eea1457962b226398850f7e3a3c56fc98 · sha256:51f7a0e89127d04a… · /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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