# CVE-2026-118554: OpenID Connect Client - Moderately critical - Improper authentication - SA-CONTRIB-2026-287

Status: published. Published: 2026-10-30. Updated: 2026-11-06.

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal OpenID Connect Client allows Authentication Bypass. This issue affects OpenID Connect Client versions: from 0.0.0 to 2.3.1.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Drupal / OpenID Connect Client: ≥ 0.0.0; < 2.3.1 (affected, semver). Source: CNA: drupal

## Severity and prioritization

- CVSS 3.1: 5.4 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N; source: ADP: CISA-ADP

- CISA KEV: No listing in collected sources

- EPSS: 0.19% as of 2026-11-05; percentile 9.02%

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

- Weaknesses: CWE-288

## Exploit evidence

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

## References

- https://www.drupal.org/sa-contrib-2026-287 (CNA: drupal)

## Provenance

- CNA: drupal: https://www.cve.org/CVERecord?id=CVE-2026-118554; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-118554; retrieved 2026-11-06; source updated Not reported

Revision: 41471c7e792c69e10dc7848b7f45b204849d5820fe4150ce8e8d765a26e24665

Canonical: https://y2.dev/cve/CVE-2026-118554

## 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.