{"id":"CVE-2026-113142","kind":"vulnerability","aliases":["CVE-2026-113142"],"related":[],"title":"Google Chrome: memory corruption in Extensions lets a web page read sandbox memory","description":"Memory corruption in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially read memory inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)","summary":"A memory corruption bug in Chrome's Extensions component lets a remote attacker who serves a crafted HTML page read memory inside the browser sandbox. The sources describe it as a read, with Chromium rating it Medium severity.","severity":"medium","cvss":6.5,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"google chrome","fixed":["156.0.8078.47"],"affected":"< 156.0.8078.47","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["browser","chrome","desktop","managed-endpoints","vendor"],"not_affected_if":["already-on-156.0.8078.47-or-later"],"how_to_check":"- Run `chrome://version` and compare the version against `156.0.8078.47`\n- On managed fleets, check the installed Chrome version with your endpoint management tool","fix":"- Update Google Chrome to `156.0.8078.47` or later\n- Relaunch Chrome after the update so the fixed build is running","status":"open","published_at":"2026-10-20T22:19:06+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","triaged_at":"2026-10-25T03:53:12+00:00","updated_at":"2026-10-25T03:53:12+00:00","category":"vendor","confidence":0.7,"triage":{"at":"2026-10-25T03:53:12Z","model":"claude-haiku-5-5","output":{"fix":"- Update Google Chrome to `156.0.8078.47` or later\n- Relaunch Chrome after the update so the fixed build is running","reach":"internet","title":"Google Chrome: memory corruption in Extensions lets a web page read sandbox memory","impact":"low","summary":"A memory corruption bug in Chrome's Extensions component lets a remote attacker who serves a crafted HTML page read memory inside the browser sandbox. The sources describe it as a read, with Chromium rating it Medium severity.","category":"vendor","nicknames":[],"who_cares":["chrome","desktop","browser","managed-endpoints"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker reads memory inside the browser sandbox from a crafted page","analyst_note":"","how_to_check":"- Run `chrome://version` and compare the version against `156.0.8078.47`\n- On managed fleets, check the installed Chrome version with your endpoint management tool","needs_analyst":false,"not_affected_if":["already-on-156.0.8078.47-or-later"],"who_is_affected":"Anyone running Google Chrome older than 156.0.8078.47 on desktop, since any browsing of a malicious page can trigger the flaw. Teams that only manage Chrome through an auto-updating enterprise policy should confirm the fleet has actually moved to the fixed build.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"medium"},"cost_usd":0.000589,"input_tokens":3334,"output_tokens":512,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-113142':16A,19A '-2026':15A,18A '156.0.8078.47':76C 'allow':77C 'attack':41B,80C 'browser':22B,52B 'bug':32B 'chrome':2A,21A,23B,34B,73C 'chromium':62B,93C 'compon':37B 'corrupt':4A,31B,68C 'craft':45B,90C 'cve':14A,17A 'describ':56B 'desktop':24B 'endpoint':27B 'extens':6A,36B,70C 'googl':1A,72C 'google':20A 'html':46B,91C 'insid':50B,85C 'let':7A,38B 'manag':26B 'managed-endpoint':25B 'medium':65B,96C 'memori':3A,13A,30B,49B,67C,84C 'page':10A,47B,92C 'potenti':82C 'prior':74C 'rate':63B 'read':11A,48B,60B,83C 'remot':40B,79C 'sandbox':12A,53B,87C 'secur':94C 'serv':43B 'sever':66B,95C 'sourc':55B 'vendor':28B 'via':88C 'web':9A","nicknames":[],"mitigations":[],"who_affected":"Anyone running Google Chrome older than 156.0.8078.47 on desktop, since any browsing of a malicious page can trigger the flaw. Teams that only manage Chrome through an auto-updating enterprise policy should confirm the fleet has actually moved to the fixed build.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:19:06+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","cvss_by":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-113142","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113142","severity":null,"published_at":"2026-10-20T22:19:06+00:00","modified_at":"2026-10-21T20:17:24+00:00","first_seen_at":"2026-10-23T21:57:24+00:00","fetched_at":"2026-10-23T22:28:59+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}