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CVE-2026-8879

Version 3.0.7 of the Securly Chrome Extension dynamically registers content13.min.js as a content script via chrome.scripting.registerContentScripts() at runtime. This script is NOT declared in manifest.json and bypasses Chrome Web Store static security review. It runs on all URLs and immediately hides all page content, creates a full-page overlay, pauses all videos, and only restores content when the service worker confirms the page passes filtering. If Securly's servers are unreachable, pages
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4fb7f92672a2f823fba56be70b47fb463262951eef8ada9f15e0c609ee7d2922
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-829","description":"CWE-829 Inclusion of Functionality from Untrusted Control Sphere","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:432d04dfdc0ae22a00c51219ae44cde5b203da8fed33293c6d94985fcdff4eac · sha256:e9b390ab71e7dd28… · /containers/adp/0/problemTypes/0/descriptions/0

{"description":"CWE-829 Inclusion of Functionality from Untrusted Control Sphere","lang":"en"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:432d04dfdc0ae22a00c51219ae44cde5b203da8fed33293c6d94985fcdff4eac · sha256:e9b390ab71e7dd28… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"Securly Chrome Extension","vendor":"Securly","versions":[{"lessThanOrEqual":"3.0.7","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:432d04dfdc0ae22a00c51219ae44cde5b203da8fed33293c6d94985fcdff4eac · sha256:e9b390ab71e7dd28… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:432d04dfdc0ae22a00c51219ae44cde5b203da8fed33293c6d94985fcdff4eac · sha256:e9b390ab71e7dd28… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-829","description":"CWE-829 Inclusion of Functionality from Untrusted Control Sphere","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:432d04dfdc0ae22a00c51219ae44cde5b203da8fed33293c6d94985fcdff4eac · sha256:e9b390ab71e7dd28… · /containers/adp/0/problemTypes/0/descriptions/0
{"description":"CWE-829 Inclusion of Functionality from Untrusted Control Sphere","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:432d04dfdc0ae22a00c51219ae44cde5b203da8fed33293c6d94985fcdff4eac · sha256:e9b390ab71e7dd28… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://kb.cert.org/vuls/id/595768"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:432d04dfdc0ae22a00c51219ae44cde5b203da8fed33293c6d94985fcdff4eac · sha256:e9b390ab71e7dd28… · /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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