ShellCodeX vulnerability brief
MEDIUM
EPSS 0.1%
Analyzed
CVE-2026-74967
Same-origin policy bypass in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Published 18 Aug 2026, 13:17 UTC
Last modified 19 Aug 2026, 15:26 UTC
01
Attack profile
The conditions required to exploit this vulnerability and its potential impact.
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
02
Affected products
Product applicability statements supplied with the NVD record.
VendorProductAffected version
Mozilla
Firefox
before 140.14.0
Mozilla
Firefox
from 141.0 (inclusive) before 153.1.0
Mozilla
Thunderbird
before 140.14.0
Mozilla
Thunderbird
from 141.0 (inclusive) before 153.1.0
03
Weakness classification
CWE categories help security teams group the underlying software weakness.
04
Source references
External advisories, patches and technical reports attached to this CVE record.
NVD
National Vulnerability Database recordnvd.nist.gov
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01
Permissions Required
security@mozilla.org
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02
Vendor Advisory
security@mozilla.org
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03
Vendor Advisory
security@mozilla.org
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04
Vendor Advisory
security@mozilla.org
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05
Vendor Advisory
security@mozilla.org
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06
Vendor Advisory
security@mozilla.org
↗
07
Vendor Advisory
security@mozilla.org
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