CVE-2026-87508 json
Incorrect authorization in Loader in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy via a craft…
published 2026-09-09 2 mo ago modified 2026-09-09 1 mo ago also EUVD-2026-74357
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 19%
- public exploits
- 0
- none known
Summary
Incorrect authorization in Loader in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)
Patch / fix
- google chrome 153.0.8010.36
- chromium Debian 12 153.0.8010.52-1~deb12u1
- chromium Debian 13 153.0.8010.47-2~deb13u1
- chromium Debian 14 153.0.8010.47-1
debian advisories DEBIAN-CVE-2026-87508
- chromium openSUSE Leap 16.0 153.0.8010.52-bp160.1.1
- chromium openSUSE Tumbleweed 153.0.8010.36-1.1
opensuse advisories openSUSE-SU-2026:21921-1openSUSE-SU-2026:11750-1
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-87508 updated cvss 8.1
chromium-browser: Google Chrome: Web origin policy bypass via incorrect authorization in Loader
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 1 mo ago
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
Affected products
- Google Chrome
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
- Technology feeds
References
-
chromereleases.googleblog.com
/2026/09/stable-channel-update-for-desktop_0808145027.html
release-notes, vendor-advisory
-
issues.chromium.org
/issues/513346220
permissions-required
Sources
- CVE List CVE-2026-87508
- NVD CVE-2026-87508
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.