CVE-2026-91742: google chrome Unintended Proxy or Intermediary
Vulnerability summary
CVE-2026-91742 is a medium (CVSS 4.8) Unintended Proxy or Intermediary vulnerability in google chrome. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 9.2% of scored vulnerabilities.
Not severe (CVSS 4.8, 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
- 15-09-2026PublishedVulnerability first disclosed.
- 18-09-2026Last modifiedVulnerability information updated.
Description
Confused deputy in PriceTracking in Google Chrome on on iOS prior to 153.0.8010.47 allowed a remote attacker leveraging social engineering to bypass system access restrictions into a privileged page via crafted network traffic. (Chromium security severity: Medium)
CVSS metrics
3 scores · 3 sources · 1 version- OSV · DebianEcosystem advisory · calculated4.8MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- NVDNIST4.8MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS trend
Probability
0.19%
Chance of exploitation in the next 30 days
Percentile
9%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.19% 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
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no 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≥ 153.0.8010.47, < 153.0.8010.47 | < 153.0.8010.47
2 vendors · 2 products
References
3 links- chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0541751186.htmlRelease NotesVendor Advisory
- issues.chromium.org/issues/513858387Permissions Required