CVE-2026-9979

MEDIUM 5 ALL-YEARS

Published 2026-05-28 · Last modified 2026-05-29 · Chrome · NVD: Analyzed

Insufficient validation of untrusted input in Input 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 HTML page. (Chromium security severity: High)

LIMITED SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.1%chance of exploitation in 30 days · 2nd percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation none, automatable no

Impact if exploited

5CVSS 3.1 · MEDIUM · ADP

ConfidentialityLow
IntegrityLow
AvailabilityLow

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
⚠User interaction: A user must take an action (click / open a file)
⚠Complexity: Needs a race window or specific setup

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

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Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Affected

Vendors Google Microsoft Apple Linux

Products Chrome Windows Macos Linux Kernel

Weakness (CWE)

CWE-20: Insufficient validation of untrusted input

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

References and research data (JSON)

Vendor product assessments

All currently supported Red Hat products · known not affected

Vendor assessment for this product only.
Reason: vulnerable code not present
Red Hat · CVE-2026-9979 · Updated 2026-06-28T07:47:27+00:00

Known Affected Software Configurations

Vendor	Product	Version range
Google	Chrome	< 148.0.7778.216
Google	Chrome	< 148.0.7778.215

All CVSS metrics

MEDIUM 5 v3.1 · ADP Primary
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
MEDIUM 5 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

References

Advisories

https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html Release NotesVendor Advisoryvendor-referenceCVE record · Chrome · Updated 2026-05-28T22:25:43.781Z
NVD · CVE-2026-9979 · Updated 2026-07-21T12:10:00.090
Red Hat · CVE-2026-9979 · Updated 2026-06-28T07:47:27+00:00
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9979.json vendor-advisoryRed Hat · CVE-2026-9979 · Updated 2026-06-28T07:47:27+00:00
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-33121 ADVISORYEUVD · EUVD-2026-33121

Technical & other

https://issues.chromium.org/issues/511742228 Permissions Requiredvendor-referenceCVE record · Chrome · Updated 2026-05-28T22:25:43.781Z
NVD · CVE-2026-9979 · Updated 2026-07-21T12:10:00.090
Red Hat · CVE-2026-9979 · Updated 2026-06-28T07:47:27+00:00
https://access.redhat.com/security/cve/CVE-2026-9979 vendor-referenceRed Hat · CVE-2026-9979 · Updated 2026-06-28T07:47:27+00:00
https://www.cve.org/CVERecord?id=CVE-2026-9979 vendor-referenceRed Hat · CVE-2026-9979 · Updated 2026-06-28T07:47:27+00:00
https://nvd.nist.gov/vuln/detail/CVE-2026-9979 vendor-referenceRed Hat · CVE-2026-9979 · Updated 2026-06-28T07:47:27+00:00

Sources: NVD · CVE.org · All sources and attribution · EPSS