# CVE-2026-119977: WordPress Core 4.7.0 - 7.1.3 - Unauthenticated Upgrade-Window Staged-Installer Remote Code Execution

Status: published. Published: 2026-10-31. Updated: 2026-11-03.

WordPress Core is vulnerable to Remote Code Execution in versions 4.7 through 7.1.3. This is due to predictable, web-accessible staging paths used during full-package core upgrades. This makes it possible for unauthenticated attackers to execute code on the server during the upgrade window.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- WordPress Foundation / WordPress: ≥ 4.7.0; ≤ 4.7.38 (affected, semver); ≥ 4.8.0; ≤ 4.8.33 (affected, semver); ≥ 4.9.0; ≤ 4.9.34 (affected, semver); ≥ 5.0.0; ≤ 5.0.30 (affected, semver); ≥ 5.1.0; ≤ 5.1.27 (affected, semver); ≥ 5.2.0; ≤ 5.2.29 (affected, semver); ≥ 5.3.0; ≤ 5.3.26 (affected, semver); ≥ 5.4.0; ≤ 5.4.24 (affected, semver); ≥ 5.5.0; ≤ 5.5.23 (affected, semver); ≥ 5.6.0; ≤ 5.6.22 (affected, semver); ≥ 5.7.0; ≤ 5.7.20 (affected, semver); ≥ 5.8.0; ≤ 5.8.18 (affected, semver); ≥ 5.9.0; ≤ 5.9.19 (affected, semver); ≥ 6.0.0; ≤ 6.0.17 (affected, semver); ≥ 6.1.0; ≤ 6.1.15 (affected, semver); ≥ 6.2.0; ≤ 6.2.14 (affected, semver); ≥ 6.3.0; ≤ 6.3.13 (affected, semver); ≥ 6.4.0; ≤ 6.4.13 (affected, semver); ≥ 6.5.0; ≤ 6.5.13 (affected, semver); ≥ 6.6.0; ≤ 6.6.10 (affected, semver); ≥ 6.7.0; ≤ 6.7.10 (affected, semver); ≥ 6.8.0; ≤ 6.8.11 (affected, semver); ≥ 6.9.0; ≤ 6.9.10 (affected, semver); ≥ 7.0.0; ≤ 7.0.7 (affected, semver); ≥ 7.1.0; ≤ 7.1.3 (affected, semver). Source: CNA: Wordfence

## Severity and prioritization

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: Wordfence

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H; source: NVD: security@wordfence.com

- CISA KEV: No listing in collected sources

- EPSS: 0.60% as of 2026-11-03; percentile 48.75%

- SSVC: exploitation active; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-367

## Exploit evidence

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/4b4da0cf-d9f4-47c4-a0e8-6c4dc5a6f250?source=cve (CNA: Wordfence)

- https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/class-wp-upgrader.php#L378 (CNA: Wordfence)

- https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/class-core-upgrader.php#L162 (CNA: Wordfence)

- https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/update-core.php#L1549 (CNA: Wordfence)

- https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/setup-config.php#L282 (CNA: Wordfence)

- https://core.trac.wordpress.org/browser/tags/7.1.4/src/wp-admin/includes/class-wp-upgrader.php#L346 (CNA: Wordfence)

- https://core.trac.wordpress.org/browser/tags/7.1.4/src/wp-admin/includes/update-core.php#L1545 (CNA: Wordfence)

- https://wordpress.org/news/2026/10/wordpress-7-1-4/ (CNA: Wordfence)

- https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-core/wordpress-core-470-713-unauthenticated-upgrade-window-staged-installer-remote-code-execution (ADP: CISA-ADP; third-party-advisory)

- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-119977 (ADP: CISA-ADP; government-resource)

- https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/class-core-upgrader.php#L162 (security@wordfence.com)

- https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/class-wp-upgrader.php#L378 (security@wordfence.com)

- https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/update-core.php#L1549 (security@wordfence.com)

- https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/setup-config.php#L282 (security@wordfence.com)

- https://core.trac.wordpress.org/browser/tags/7.1.4/src/wp-admin/includes/class-wp-upgrader.php#L346 (security@wordfence.com)

- https://core.trac.wordpress.org/browser/tags/7.1.4/src/wp-admin/includes/update-core.php#L1545 (security@wordfence.com)

- https://wordpress.org/news/2026/10/wordpress-7-1-4/ (security@wordfence.com)

- https://www.wordfence.com/threat-intel/vulnerabilities/id/4b4da0cf-d9f4-47c4-a0e8-6c4dc5a6f250?source=cve (security@wordfence.com)

## Provenance

- CNA: Wordfence: https://www.cve.org/CVERecord?id=CVE-2026-119977; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-119977; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-119977; retrieved 2026-11-03; source updated Not reported

Revision: be925af7f355ac6417a53bf478741ff44647eb92fca224eed64d208c50eed26a

Canonical: https://y2.dev/cve/CVE-2026-119977

## 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.

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