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CVE-2026-44392

Missing authorization vulnerability exists in Movable Type. Under certain conditions, when a user without administrator privileges signs in to the product, unintended update processing may be executed.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3ad2a892292670bb28d7c5a1bf107b6419938f669003a2b981d691ec87b215d8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 14 assertions

{"product":"Movable Type Premium (Advanced Edition)","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.0.7 and earlier"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/12

{"product":"Movable Type Premium","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.0.7 and earlier"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/9

{"product":"Movable Type Premium (Advanced Edition)","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.1.1 and earlier"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/11

{"product":"Movable Type Advanced","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.1.1 and earlie"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/4

{"product":"Movable Type Premium (Advanced Edition)","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"2.15 and earlier (included in Movable Type 8.8.4 and earlier or Movable Type 8.0.11 and earlier)"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/13

{"product":"Movable Type Advanced","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"8.0.10 and earlier"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/7

{"product":"Movable Type Advanced","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.0.7 and earlier"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/5

{"product":"Movable Type Advanced","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"8.8.3 and earlier"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/6

{"product":"Movable Type","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"8.8.3 and earlier"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/2

{"product":"Movable Type","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.0.7 and earlier"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/1

{"product":"Movable Type Premium","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.1.1 and earlier"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/8

{"product":"Movable Type","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.1.1 and earlier"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/0

{"product":"Movable Type","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"8.0.10 and earlier"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/3

{"product":"Movable Type Premium","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"2.15 and earlier (included in Movable Type 8.8.4 and earlier or Movable Type 8.0.11 and earlier)"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/10
cvss · 2 assertions

{"metric":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/metrics/0/cvssV3_0

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/metrics/1/cvssV4_0

Affected products and versions

14 source assertions
{"product":"Movable Type Premium (Advanced Edition)","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.0.7 and earlier"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/12
{"product":"Movable Type Premium","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.0.7 and earlier"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/9
{"product":"Movable Type Premium (Advanced Edition)","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.1.1 and earlier"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/11
{"product":"Movable Type Advanced","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.1.1 and earlie"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/4
{"product":"Movable Type Premium (Advanced Edition)","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"2.15 and earlier (included in Movable Type 8.8.4 and earlier or Movable Type 8.0.11 and earlier)"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/13
{"product":"Movable Type Advanced","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"8.0.10 and earlier"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/7
{"product":"Movable Type Advanced","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.0.7 and earlier"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/5
{"product":"Movable Type Advanced","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"8.8.3 and earlier"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/6
{"product":"Movable Type","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"8.8.3 and earlier"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/2
{"product":"Movable Type","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.0.7 and earlier"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/1
{"product":"Movable Type Premium","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.1.1 and earlier"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/8
{"product":"Movable Type","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"9.1.1 and earlier"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/0
{"product":"Movable Type","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"8.0.10 and earlier"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/3
{"product":"Movable Type Premium","vendor":"Six Apart Ltd.","versions":[{"status":"affected","version":"2.15 and earlier (included in Movable Type 8.8.4 and earlier or Movable Type 8.0.11 and earlier)"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/affected/10

Provider-owned CVSS observations

2 source assertions
{"metric":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/metrics/0/cvssV3_0
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/metrics/1/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-862","description":"Missing authorization","lang":"en-US","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://jvn.jp/en/jp/JVN66473735/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/references/2
{"url":"https://movabletype.org/news/2026/05/mt-908-released.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/references/0
{"url":"https://www.sixapart.jp/movabletype/news/2026/05/20-1100.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:786809f020cb5a3b21d4227df4053586099aa44855d4783eb4d23b102b7350f6 · sha256:bdf6799c3dc916ca… · /containers/cna/references/1

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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