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CVE-2026-20202

In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.6, 10.2.2510.10, 10.1.2507.20, 10.0.2503.13, and 9.3.2411.127, a user who holds a role that contains the high-privilege capability `edit_user`could create a specially crafted username that includes a null byte or a non-UTF-8 percent-encoded byte due to improper input validation.<br><br>This could lead to inconsistent conversion of usernames into a proper format
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:283745b4f10176e50ce522c5c6a6edf5b46f20089c852efb03016515c09085c3
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"product":"Splunk Cloud Platform","vendor":"Splunk","versions":[{"lessThan":"Not Affected","status":"affected","version":"10.4.2603","versionType":"custom"},{"lessThan":"10.3.2512.6","status":"affected","version":"10.3.2512","versionType":"custom"},{"lessThan":"10.2.2510.10","status":"affected","version":"10.2.2510","versionType":"custom"},{"lessThan":"10.1.2507.20","status":"affected","version":"10.1.2507","versionType":"custom"},{"lessThan":"10.0.2503.13","status":"affected","version":"10.0.2503","versionType":"custom"},{"lessThan":"9.3.2411.127","status":"affected","version":"9.3.2411","ve…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:807ee1a516d2d2ec0a4c59bb11e6d7dc49e086f5f77634da9c900520bd851542 · sha256:bdcb1ce380ce173a… · /containers/cna/affected/1

{"product":"Splunk Enterprise","vendor":"Splunk","versions":[{"lessThan":"10.2.2","status":"affected","version":"10.2","versionType":"custom"},{"lessThan":"10.0.5","status":"affected","version":"10.0","versionType":"custom"},{"lessThan":"9.4.10","status":"affected","version":"9.4","versionType":"custom"},{"lessThan":"9.3.11","status":"affected","version":"9.3","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:807ee1a516d2d2ec0a4c59bb11e6d7dc49e086f5f77634da9c900520bd851542 · sha256:bdcb1ce380ce173a… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"product":"Splunk Cloud Platform","vendor":"Splunk","versions":[{"lessThan":"Not Affected","status":"affected","version":"10.4.2603","versionType":"custom"},{"lessThan":"10.3.2512.6","status":"affected","version":"10.3.2512","versionType":"custom"},{"lessThan":"10.2.2510.10","status":"affected","version":"10.2.2510","versionType":"custom"},{"lessThan":"10.1.2507.20","status":"affected","version":"10.1.2507","versionType":"custom"},{"lessThan":"10.0.2503.13","status":"affected","version":"10.0.2503","versionType":"custom"},{"lessThan":"9.3.2411.127","status":"affected","version":"9.3.2411","ve…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:807ee1a516d2d2ec0a4c59bb11e6d7dc49e086f5f77634da9c900520bd851542 · sha256:bdcb1ce380ce173a… · /containers/cna/affected/1
{"product":"Splunk Enterprise","vendor":"Splunk","versions":[{"lessThan":"10.2.2","status":"affected","version":"10.2","versionType":"custom"},{"lessThan":"10.0.5","status":"affected","version":"10.0","versionType":"custom"},{"lessThan":"9.4.10","status":"affected","version":"9.4","versionType":"custom"},{"lessThan":"9.3.11","status":"affected","version":"9.3","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:807ee1a516d2d2ec0a4c59bb11e6d7dc49e086f5f77634da9c900520bd851542 · sha256:bdcb1ce380ce173a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":6.6,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:807ee1a516d2d2ec0a4c59bb11e6d7dc49e086f5f77634da9c900520bd851542 · sha256:bdcb1ce380ce173a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-176","description":"The software does not properly handle when an input contains Unicode encoding.","lang":"en","type":"cwe"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:807ee1a516d2d2ec0a4c59bb11e6d7dc49e086f5f77634da9c900520bd851542 · sha256:bdcb1ce380ce173a… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://advisory.splunk.com/advisories/SVD-2026-0401"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:807ee1a516d2d2ec0a4c59bb11e6d7dc49e086f5f77634da9c900520bd851542 · sha256:bdcb1ce380ce173a… · /containers/cna/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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