CVE-2026-93378
LOWDescription
Missing authorization in Storage in Google Chrome prior to 153.0.8010.52 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chromium security severity: Medium)
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Exploit Intelligence
EPSS data unavailable for this CVE.
References
Related Vulnerabilities
Other CWE-862 (Missing Authorization) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2021-39226 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2022-0543 | Critical | 10.0 | 99% | KEV | Fix |
| CVE-2021-21978 | Critical | 9.8 | 99% | - | Fix |
| CVE-2023-52163 | High | 8.8 | 97% | KEV | - |
| CVE-2022-1329 | High | 8.8 | 93% | - | - |
| CVE-2023-6875 | Critical | 9.8 | 90% | - | - |
Common questions
How do I fix CVE-2026-93378?
No published fix for CVE-2026-93378 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
How severe is CVE-2026-93378?
CVE-2026-93378 has a CVSS v3 base score of 3.1, rated low. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-09-18.