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VulnerabilityPublished

CVE-2026-87540: Isolated · Incorrect Authorization

Source GCVE Database

0
Authoritative record:CVE-2026-87540· Medium 5.4

Not known to be exploited · CVSS 5.4 Medium : upgrade to 153.0.8010.36 when convenient.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 13% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 153.0.8010.36
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade Chrome to 153.0.8010.36.

Affected software

ProductAffectedFixed in
GoogleChromeAffected
  • >=153.0.8010.36 <153.0.8010.36
Fixed in
  • 153.0.8010.36

Description

Incorrect authorization in Isolated in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to spoof UI elements via a crafted HTML page. (Chromium security severity: Medium)

References

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