CVE-2026-91738ModerateNetwork
Chromium CVE-2026-91738: Improper input validation
Assessment
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases ]( https://chromereleases.googleblog.com/2026 )) for more information.
- Severity
- Moderate
- CVSS base score
- 9.6CVSS:3.1/
AV:N/ AC:L/ PR:N/ UI:R/ S:C/ C:H/ I:H/ A:H - Impact
- Not stated
- EPSS, next 30 days
- Not scored yet
- Public exploit code
- No Nuclei template lists it
- Exploitability
- Not assessed
- Publicly disclosed
- No
- Customer action
- Required: apply the update
- Component
- Microsoft Edge (Chromium-based)
- Weakness
- CWE-20: Improper Input Validation
- Issued by
- Chrome
- Published
- 17 Sep 2026 · September 2026
- Last revised
- 17 Sep 2026
CVSS 3.1 base metricsRed raises the risk · green lowers it
- Attack vector
- NetworkAV:N
- Attack complexity
- LowAC:L
- Privileges required
- NonePR:N
- User interaction
- RequiredUI:R
- Scope
- ChangedS:C
- Confidentiality
- HighC:H
- Integrity
- HighI:H
- Availability
- HighA:H
Updates that fix it
0 KBsNo KB listed
MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.
Affected products
Browser1 affected product
What changed
First observed 14 Oct 2026- 14 Oct 2026 Source coverage: msrc-cvrfIncomplete → Current
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