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CVE-2025-6430

When a file download is specified via the `Content-Disposition` header, that directive would be ignored if the file was included via a `<embed>` or `<object>` tag, potentially making a website vulnerable to a cross-site scripting attack. This vulnerability was fixed in Firefox 140, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e7a011892bfaf5a4263691b6613ad8cbe535771e8e25178437ab4e88417c2794
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":"Firefox","vendor":"Mozilla","versions":[{"lessThanOrEqual":"128.*","status":"unaffected","version":"128.12","versionType":"rpm"},{"lessThanOrEqual":"*","status":"unaffected","version":"140","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/cna/affected/0

{"product":"Thunderbird","vendor":"Mozilla","versions":[{"lessThanOrEqual":"128.*","status":"unaffected","version":"128.12","versionType":"rpm"},{"lessThanOrEqual":"*","status":"unaffected","version":"140","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"product":"Firefox","vendor":"Mozilla","versions":[{"lessThanOrEqual":"128.*","status":"unaffected","version":"128.12","versionType":"rpm"},{"lessThanOrEqual":"*","status":"unaffected","version":"140","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/cna/affected/0
{"product":"Thunderbird","vendor":"Mozilla","versions":[{"lessThanOrEqual":"128.*","status":"unaffected","version":"128.12","versionType":"rpm"},{"lessThanOrEqual":"*","status":"unaffected","version":"140","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/adp/0/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:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

7 source assertions
{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1971140"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/cna/references/0
{"url":"https://lists.debian.org/debian-lts-announce/2025/06/msg00029.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/adp/1/references/1
{"url":"https://lists.debian.org/debian-lts-announce/2025/07/msg00002.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/adp/1/references/0
{"url":"https://www.mozilla.org/security/advisories/mfsa2025-51/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/cna/references/1
{"url":"https://www.mozilla.org/security/advisories/mfsa2025-53/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/cna/references/2
{"url":"https://www.mozilla.org/security/advisories/mfsa2025-54/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/cna/references/3
{"url":"https://www.mozilla.org/security/advisories/mfsa2025-55/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6627dcb69ddfc557872910c34ed1452ea5947569285cc520925cfd4472cea8c0 · sha256:f9701cbe872f2100… · /containers/cna/references/4

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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