CVE-2026-87493

MEDIUM 6.5 ALL-YEARS

Published 2026-09-09 · Last modified 2026-09-10 · Chrome · NVD: Analyzed

Missing authorization in FileSystem in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)

LIMITED SIGNALS

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

Exploitation likelihood

0.3%chance of exploitation in 30 days · 19th percentile

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

Impact if exploited

6.5CVSS 3.1 · MEDIUM · ADP

ConfidentialityNone
IntegrityHigh
AvailabilityNone

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: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

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

Products Chrome

Weakness (CWE)

CWE-862: Missing authorization

CVSS vector

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

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-2026-87493 · Updated 2026-09-09T01:47:02+00:00

Known Affected Software Configurations

Vendor	Product	Version range
Google	Chrome	< 153.0.8010.36

All CVSS metrics

MEDIUM 6.5 v3.1 · ADP Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
MEDIUM 6.5 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References

Exploit-tagged references (not proof of a PoC)

https://issues.chromium.org/issues/523741272 ExploitIssue TrackingPatchCVE record · Chrome · Updated 2026-09-09T00:09:56.153Z
NVD · CVE-2026-87493 · Updated 2026-09-11T19:24:15.370

Advisories

https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html Release NotesVendor AdvisoryCVE record · Chrome · Updated 2026-09-09T00:09:56.153Z
NVD · CVE-2026-87493 · Updated 2026-09-11T19:24:15.370
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-87493.json vendor-advisoryRed Hat · CVE-2026-87493 · Updated 2026-09-09T01:47:02+00:00
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-74407 ADVISORYEUVD · EUVD-2026-74407

Technical & other

https://access.redhat.com/security/cve/CVE-2026-87493 vendor-referenceRed Hat · CVE-2026-87493 · Updated 2026-09-09T01:47:02+00:00
https://www.cve.org/CVERecord?id=CVE-2026-87493 vendor-referenceRed Hat · CVE-2026-87493 · Updated 2026-09-09T01:47:02+00:00

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