# CVE-2026-121057: CVE-2026-121057

Status: published. Published: 2026-11-03. Updated: 2026-11-04.

Type confusion in V8 in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Google / Chrome: ≥ 157.0.8103.38; < 157.0.8103.38 (affected, custom). Source: CNA: Chrome

## NVD configuration conditions

Affected CPE matches depend on the following AND/OR and negation conditions:

```json
[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "157.0.8103.38",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]
```

## Severity and prioritization

- CVSS 3.1: 8.8 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H; source: ADP: CISA-ADP

- CVSS 3.1: 8.8 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H; source: NVD: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-843

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html (CNA: Chrome)

- https://issues.chromium.org/issues/574038247 (CNA: Chrome)

- https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html (chrome-cve-admin@google.com; Release Notes, Vendor Advisory)

- https://issues.chromium.org/issues/574038247 (chrome-cve-admin@google.com; Permissions Required)

## Provenance

- CNA: Chrome: https://www.cve.org/CVERecord?id=CVE-2026-121057; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-121057; retrieved 2026-11-04; source updated 2026-11-04

Revision: 6b4f9a001548e3f05bf7c453a5eb93e4c7cfe059918152db2f8c2128a13cdcca

Canonical: https://y2.dev/cve/CVE-2026-121057

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.