CVE-2026-87479: Insufficient policy enforcement in Google Chrome Extensions prior to 153.0.8010.36 allows remote code execution outside sandbox
A NVD · · CVE-2026-87479
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 requires renderer process compromise combined with social engineering, which significantly limits practical exploitation in enterprise environments, but enables full code execution outside the browser sandbox if successfully exploited.
Description
CVE-2026-87479 affects Google Chrome prior to version 153.0.8010.36 and enables sandbox bypass through insufficient policy enforcement in extension functionality. An attacker must first compromise the renderer process and subsequently leverage social engineering via a crafted HTML page to execute arbitrary code outside the sandbox. The Chromium severity rating is Medium, but actual impact is substantial as successful exploitation can lead to complete system compromise. Public exploitation status is not documented; the vulnerability is patched in stable Chrome releases from 153.0.8010.36 onwards.
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