CVE-2026-9978
📛 CVE Title
Debian: CVE-2026-9978: chromium -- security update
Description
Use after free in Glic in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
Overview
- State
- —
- Assigner (CNA)
- —
- CVSS severity
- MEDIUM
- CVSS score
- 5.0 / 10
- CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C- Effective score
- 5.0 / 10 MEDIUM source: CNA overview
- CWE(s)
- —
- Reserved
- —
- Published
- 2026-06-01 00:00 UTC
- Last updated
- 2026-06-19 14:40 UTC
- Source
- https://www.rapid7.com/db/vulnerabilities/debian-cve-2026-9978/
- Linked Threat
- CVE-2026-9978 — CVE-2026-9978
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-05-28 23:16:56 UTC
- NVD last modified
- 2026-06-17 11:05:56 UTC
- NVD CVSS v3.1
- 8.8 / 10 HIGH source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Exploitability subscore
- 2.8 / 10
- Impact subscore
- 5.9 / 10
- EPSS score
- 0.0023 (probability of exploitation in next 30 days)
- EPSS percentile
- 14.14% vs all CVEs — higher = more likely to be exploited, as of 2026-06-30
NVD-assigned CWE(s):
CWE-416
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-06-30 19:58 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-33120 - Assigner
- Chrome
- Published
- May 28, 2026, 10:25:43 PM
- Updated
- May 30, 2026, 3:55:30 AM
- EUVD base score (CVSS 3.1)
-
8.8 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EUVD-reported EPSS
- 0.2300
- Vendors
- Products
-
Chrome (148.0.7778.216 <148.0.7778.216)
- Aliases
-
GHSA-vv5x-2m86-4jv8
ENISA description: Use after free in Glic in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
Microsoft Security Response Center MSRC
Microsoft's vendor-authoritative record from the Security Update Guide — its own CVSS score, impact, severity rating, exploit assessment, and KB-article fixes. Refreshed 2026-08-15 03:02 UTC (source: CVRF).
- Release
- 2026-May
Microsoft remediations / KB articles (2)
- Release Notes — Vendor Fix / Security Update (fixed build 148.0.3967.96)
- https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security — None Available / Release Notes
Microsoft FAQ (2)
What is the version information for this release?
| Microsoft Edge Version | Date Released | Based on Chromium Version |
|---|---|---|
| 148.0.3967.96 | 05/29/2026 | 148.0.7778.216/217 |
Why is this Chrome CVE included in the Security Update Guide?
The vulnerability assigned to this CVE is in Chromium Open Source Software (OSS) which is consumed by Microsoft Edge (Chromium-based). It is being documented in the Security Update Guide to announce that the latest version of Microsoft Edge (Chromium-based) is no longer vulnerable.
How can I see the version of the browser?
- In your Microsoft Edge browser, click on the 3 dots (...) on the very right-hand side of the window
- Click on Help and Feedback
- Click on About Microsoft Edge
Affected products — CPE 2.3 (4) NVD
NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Vendor references (0)
References embedded in the original CVE record by the assigning CNA.
None in the CVE record.
Web references (10)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- None Available msrc
- MSRC update guide: CVE-2026-9978 msrc
- https://www.first.org/epss/ tenable:www.first.org
- https://issues.chromium.org/issues/511741396 tenable:issues.chromium.org
- https://nvd.nist.gov/vuln/detail/CVE-2026-9978 tenable:nvd.nist.gov
- https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html rapid7:chromereleases.googleblog.com
- https://www.cve.org/CVERecord?id=CVE-2026-9978 rapid7:www.cve.org
- https://attackerkb.com/topics/CVE-2026-9978 rapid7:attackerkb.com
- http://cwe.mitre.org/data/definitions/416.html rapid7:cwe.mitre.org
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-33120 rapid7:euvd.enisa.europa.eu
NVD-tagged references (2)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html chrome-cve-admin@google.com Vendor Advisory
- https://issues.chromium.org/issues/511741396 chrome-cve-admin@google.com Permissions Required
Remediations (12)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
rapid7
google-chrome-upgrade-latest
2026-06-04 09:00 UTC -
rapid7
debian-upgrade-chromium
2026-06-04 08:57 UTC -
web:cve.armis.com
CVE - 2026 -10978 (High, CVSS 8.8). Published 2026 . A use-after-free in Chrome's Chromoting (remote desktop) component on Windows allows a remote attacker to achi…
2026-06-19 02:30 UTC -
web:guide.sonatype.com
Technical security analysis for CVE - 2026 -49978. CVSS 5.1 severity. View CVSS vectors, CWE classifications, and exploit maturity ratings.
2026-06-19 02:30 UTC -
web:nvd.nist.gov
Information Technology Laboratory National Vulnerability Database Vulnerabilities
2026-06-19 02:30 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-06-19 02:30 UTC -
web:support.microsoft.com
Improvements and fixes This security update introduces the SharePoint Server Subscription Edition Version 26H1 feature update. This feature update will be included in all SharePoint Server Subscription Edition public updates going forward. For more information about this feature update, see New and improved features in SharePoint Server Subscription Edition Version 26H1. This link may be ...
2026-06-19 02:30 UTC -
web:vulert.com
Learn about CVE - 2026 -49978, a DOMPurify vulnerability that allows sanitization bypass via shadow DOM in . Discover how to fix it and protect your application.
2026-06-19 02:30 UTC -
web:www.computerworld.com
Microsoft says it is considering a patch for a zero-day vulnerability, dubbed YellowKey, that allows attackers with access to a Windows device to bypass Bitlocker encryption protection and read ...
2026-06-19 02:30 UTC -
web:www.miggo.io
DOMPurify IN_PLACE sanitization bypass via an attached shadow root inside a <template> element's content results in persistent XSS and script execution.
2026-06-19 02:30 UTC -
web:www.rapid7.com
Rapid7's VulnDB is curated repository of vetted computer software exploits and exploitable vulnerabilities.
2026-06-19 02:30 UTC -
web:www.tenable.com
DOMPurify IN_PLACE Sanitization Bypass via Attached Shadow Root Inside <template>.content
2026-06-19 02:30 UTC
AI Forensic Analysis
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