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Fencer Vulns
medium 6.5

CVE-2026-87580 json

Incorrect authorization in WebAppInstalls in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the rendere…

published 2026-09-09 2 mo ago modified 2026-09-11 58 d ago also EUVD-2026-74339

cvss
6.5
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 20%
public exploits
0
none known

Summary

Incorrect authorization in WebAppInstalls in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass site isolation 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-2026-87580

  • 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-2026-87580 updated cvss 5.4

chromium-browser: chromium-browser: Incorrect authorization in WebAppInstalls

  • Red Hat All currently supported Red Hat products
    not 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
59 d ago

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • issues.chromium.org https://issues.chromium.org/issues/502986244 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected products

  • Google Chrome

Classification

Weakness
Technology feeds

References

Sources

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.