CVE-2026-87498: Missing Authorization in WebUI in Google Chrome Prior to 153.0.8010.36
A NVD · · CVE-2026-87498
Admiralty grading (A–F · 1–6)
Source reliability
- A Completely reliable
- B Usually reliable
- C Fairly reliable
- D Not usually reliable
- E Unreliable
- F Cannot be judged
Information credibility
- 1 Confirmed
- 2 Probably true
- 3 Possibly true
- 4 Doubtful
- 5 Improbable
- 6 Cannot be judged
NATO Admiralty (AJP-2.1) grades confidence, independent of the risk score. Cross-source corroboration isn't tracked for non-CVE news, so single-source items are capped at a lower credibility number; a low number does not imply low quality.
Key metrics
- EPSS
- 0%
Key insight
The vulnerability allows an attacker who has already compromised the renderer process to bypass the same-origin policy and breach web security boundaries.
Description
CVE-2026-87498 is an authorization flaw in Google Chrome's WebUI prior to version 153.0.8010.36. An attacker who has already compromised a browser's renderer process can use a crafted HTML page to bypass web origin policy. This enables breach of security boundaries between different web origins. The Chromium security severity is rated as High. The vulnerability requires prior renderer process compromise, which limits practical exploitability but still presents a significant risk.
Risk score
- cvss base
- 0.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 0.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational