# CVE-2026-118010: Use-after-free in the Disability Access APIs component

Status: published. Published: 2026-10-27. Updated: 2026-11-05.

Use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Mozilla / Firefox: ≥ 159; ≤ * (unaffected, rpm). Source: CNA: mozilla
- Mozilla / Thunderbird: ≥ 159; ≤ * (unaffected, rpm). Source: CNA: mozilla

## 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: 0.15% as of 2026-11-05; percentile 4.26%

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

- Weaknesses: CWE-416

## Exploit evidence

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

## References

- https://bugzilla.mozilla.org/show_bug.cgi?id=2077770 (CNA: mozilla)

- https://www.mozilla.org/security/advisories/mfsa2026-118/ (CNA: mozilla)

- https://www.mozilla.org/security/advisories/mfsa2026-121/ (CNA: mozilla)

- https://bugzilla.mozilla.org/show_bug.cgi?id=2077770 (security@mozilla.org)

- https://www.mozilla.org/security/advisories/mfsa2026-118/ (security@mozilla.org)

- https://www.mozilla.org/security/advisories/mfsa2026-121/ (security@mozilla.org)

## Provenance

- CNA: mozilla: https://www.cve.org/CVERecord?id=CVE-2026-118010; retrieved 2026-11-05; source updated 2026-11-05

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-118010; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-118010; retrieved 2026-11-05; source updated Not reported

Revision: 2a8d3f7e21db3afef91cd0ec668fb1a15e000f76db90ba77037af416c5e86d8d

Canonical: https://y2.dev/cve/CVE-2026-118010

## Agent and API access

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- 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.

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