CVE-2026-87468: google chrome Incorrect Authorization
Vulnerability summary
CVE-2026-87468 is a medium (CVSS 6.5) Incorrect Authorization vulnerability in google chrome. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18.8% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3 · Related 3Timeline
- 09-09-2026PublishedVulnerability first disclosed.
- 10-09-2026Last modifiedVulnerability information updated.
Description
Incorrect authorization in Isolated in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
CVSS metrics
3 scores · 3 sources · 1 version- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.27%
Chance of exploitation in the next 30 days
Percentile
19%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.27% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
1 foundExploit Reference (issues.chromium.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- chromium< 153.0.8010.52-1~deb12u1 | < 153.0.8010.47-2~deb13u1 | < 153.0.8010.47-1
Google1 product
- chrome≥ 153.0.8010.36, < 153.0.8010.36 | < 153.0.8010.36
2 vendors · 2 products
References
3 links- chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.htmlRelease NotesVendor Advisory