# CVE-2026-105475: CVE-2026-105475

Status: published. Published: 2026-11-02. Updated: 2026-11-02.

Improper neutralization of a NUL byte in cPanel allows remote attackers to read any mail account's calendar and contact data.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- WebPros / cPanel: ≥ 0; < 11.138.0.19 (affected, semver); ≥ 0; < 11.136.0.51 (affected, semver); ≥ 0; < 11.134.0.67 (affected, semver); ≥ 0; < 11.110.0.154 (affected, semver). Source: CNA: hackerone

## Severity and prioritization

- CVSS 4.0: 8.7 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: hackerone

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-158

## Exploit evidence

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

## References

- https://support.cpanel.net/hc/en-us/articles/44356591132439-Security-CVE-2026-105475-Unauthenticated-Access-to-Calendar-and-Contact-Data-in-cPanel-WHM-October-20th-2026 (CNA: hackerone)

## Provenance

- CNA: hackerone: https://www.cve.org/CVERecord?id=CVE-2026-105475; retrieved 2026-11-02; source updated 2026-11-02

Revision: 5c15b988b2f66c4211632e38f57917af90b6d12f097d6c643035816b4ee7319e

Canonical: https://y2.dev/cve/CVE-2026-105475

## 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.