CVE-2026-87551: Improper certificate validation in CORS in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leve

Q: How do I fix CVE-2026-87551?

chrome: upgrade to 153.0.8010.36. Exact commands for each OS are on this page.

Q: Is CVE-2026-87551 being exploited?

CVE-2026-87551 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-87551 affect?

CVE-2026-87551 affects chrome. Severity is medium (CVSS 4.3). Improper certificate validation in CORS in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to bypass web origin policy via crafted network traffic. (Chromium security severity: Low)

Q: How urgent is CVE-2026-87551?

Priority 17/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2026-87551 is a medium-severity flaw (CVSS 4.3) affecting chrome. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper certificate validation in CORS in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to bypass web origin policy via crafted network traffic. (Chromium security severity: Low)

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-295
Published	2026-09-09
Last modified	2026-09-14

Publisher (CNA): Chrome · Vendor: google

Last updated 2026-09-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-09 01:17 UTCPublished CVE record published
2026-09-14 13:18 UTCUpdated Record last modified

google chrome UPGRADE

Affected: < 153.0.8010.36

Fixed in: 153.0.8010.36

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy chrome || rpm -q chrome || chrome --version

2. UPGRADE to 153.0.8010.36 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade chrome

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chrome

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-87551?

chrome: upgrade to 153.0.8010.36. Exact commands for each OS are on this page.

Is CVE-2026-87551 being exploited?

CVE-2026-87551 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-87551 affect?

CVE-2026-87551 affects chrome. Severity is medium (CVSS 4.3). Improper certificate validation in CORS in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to bypass web origin policy via crafted network traffic. (Chromium security severity: Low)

How urgent is CVE-2026-87551?

Priority 17/100. No elevated risk signals yet.

Software pages

Google Chrome vulnerabilities · Chromium vulnerabilities

Related CVEs

CVE-2026-0628 HIGH 8.8 UPGRADE Insufficient policy enforcement in WebView tag in Google Chrome prior to 143.0.7499.192 allowed an attacker wh
CVE-2026-5285 HIGH 8.8 UPGRADE Use after free in WebGL in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to execute arbitrar
CVE-2026-6315 HIGH 8.8 UPGRADE Use after free in Permissions in Google Chrome on Android prior to 147.0.7727.101 allowed a remote attacker wh
CVE-2026-6363 HIGH 8.8 UPGRADE Type Confusion in V8 in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to potentially perform
CVE-2026-6311 HIGH 8.3 UPGRADE Uninitialized Use in Accessibility in Google Chrome on Windows prior to 147.0.7727.101 allowed a remote attack

References

← Back to latest CVEs