Ubiquitous Google Chrome browser vulnerability (CVSS 9.8) enabling authorization bypass to privileged pages; affects most organizations and requires broad mitigation.
CVE-2026-87544
Chrome extensions auth bypass lets remote attacker access privileged pages.
Is CVE-2026-87544 being exploited?
Not confirmed. CVE-2026-87544 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.26% probability of exploitation in the next 30 days.
How severe is CVE-2026-87544?
CVE-2026-87544 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-87544?
Yes. A fix has been recorded for CVE-2026-87544. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-87544 affect?
CVE-2026-87544 affects Google Chrome < 153.0.8010.36 (desktop: Windows/macOS/Linux). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-87544?
Update Chrome to 153.0.8010.36 or later immediately; block outdated clients until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can bypass extension authorization to reach privileged pages, enabling extension manipulation, data disclosure, or browser privilege escalation.
Immediate action required
- affected< 153.0.8010.36
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.