CVE Explorer
CVE-2026-9903
Insufficient validation of untrusted input in Site Isolation in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted MHTML page. (Chromium security severity: High)
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"Chrome","vendor":"Google","versions":[{"lessThan":"148.0.7778.216","status":"affected","version":"148.0.7778.216","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:af351513bb3c42a2eed189c2ef45176b660c65fcde87084cc1e4a75b94be1e55 · sha256:866e6c0aa7751ea4… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:af351513bb3c42a2eed189c2ef45176b660c65fcde87084cc1e4a75b94be1e55 · sha256:866e6c0aa7751ea4… · /containers/adp/0/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-20","description":"Insufficient validation of untrusted input","lang":"en"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:af351513bb3c42a2eed189c2ef45176b660c65fcde87084cc1e4a75b94be1e55 · sha256:866e6c0aa7751ea4… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"url":"https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:af351513bb3c42a2eed189c2ef45176b660c65fcde87084cc1e4a75b94be1e55 · sha256:866e6c0aa7751ea4… · /containers/cna/references/0
{"url":"https://issues.chromium.org/issues/498783665"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:af351513bb3c42a2eed189c2ef45176b660c65fcde87084cc1e4a75b94be1e55 · sha256:866e6c0aa7751ea4… · /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.