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WordPress wordpress core

WordPress Core 4.7.0 — 7.1.3 - Unauthenticated Upgrade-Window Staged-Installer Remote Code Execution

CVE-2026-119977Published · Updated

Action summary

Affected: ≤7.1.3Update to 4.7.39 or 4.8.34 or 4.9.35 or 5.0.31 or 5.1.28 or 5.2.30 or 5.3.27 or 5.4.25 or 5.5.24 or 5.6.23 or 5.7.21 or 5.8.19 or 5.9.20 or 6.0.18 or 6.1.16 or 6.2.15 or 6.3.14 or 6.4.14 or 6.5.14 or 6.6.11 or 6.7.11 or 6.8.12 or 6.9.11 or 7.0.8 or 7.1.4 or newer

Fixed versions are per release branch: update to the fix for the branch you run.

All remediation steps
Watch core
Public PoC
Severity
High8.1
CVSS
8.1
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:H Attack complexity
High
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
Required access
No account needed
Exploit prediction (EPSS)
1.2% chance in 30 days68th percentile
CISA KEV
Listed in CISA KEV
On this page7

Am I affected?

WordPress wordpress

  1. Affected≤ 7.1.3
  2. Patched in4.7.39 / 4.8.34 / 4.9.35 / 5.0.31 / 5.1.28 / 5.2.30 / 5.3.27 / 5.4.25 / 5.5.24 / 5.6.23 / 5.7.21 / 5.8.19 / 5.9.20 / 6.0.18 / 6.1.16 / 6.2.15 / 6.3.14 / 6.4.14 / 6.5.14 / 6.6.11 / 6.7.11 / 6.8.12 / 6.9.11 / 7.0.8 / 7.1.4

Update to 4.7.39 / 4.8.34 / 4.9.35 / 5.0.31 / 5.1.28 / 5.2.30 / 5.3.27 / 5.4.25 / 5.5.24 / 5.6.23 / 5.7.21 / 5.8.19 / 5.9.20 / 6.0.18 / 6.1.16 / 6.2.15 / 6.3.14 / 6.4.14 / 6.5.14 / 6.6.11 / 6.7.11 / 6.8.12 / 6.9.11 / 7.0.8 / 7.1.4 or newer.

You are affected if you run ≤ 7.1.3. Version 4.7.39, 4.8.34, 4.9.35, 5.0.31, 5.1.28, 5.2.30, 5.3.27, 5.4.25, 5.5.24, 5.6.23, 5.7.21, 5.8.19, 5.9.20, 6.0.18, 6.1.16, 6.2.15, 6.3.14, 6.4.14, 6.5.14, 6.6.11, 6.7.11, 6.8.12, 6.9.11, 7.0.8, 7.1.4 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WordPress.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to one of the following versions, or a newer patched version: 4.7.39, 4.8.34, 4.9.35, 5.0.31, 5.1.28, 5.2.30, 5.3.27, 5.4.25, 5.5.24, 5.6.23, 5.7.21, 5.8.19, 5.9.20, 6.0.18, 6.1.16, 6.2.15, 6.3.14, 6.4.14, 6.5.14, 6.6.11, 6.7.11, 6.8.12, 6.9.11, 7.0.8, 7.1.4
  2. Because this CVE is listed in CISA KEV, review the site for signs of compromise: unknown administrator accounts, new PHP files under wp-content/uploads, and unexpected redirects.
  3. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  4. Watch WordPress to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Umut Bayram.

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.

Exploits & references

Proof-of-concept & detection

This CVE is listed in CISA KEV. VulnCrest does not publish proof-of-concept code for KEV-listed vulnerabilities.

  • UnreviewedGitHubpaulmann/Bash_WP-CLI_Update
  • UnreviewedGitHubfoxcornlab/wordpress-core-scanner
  • UnreviewedGitHublysophavin18/CVE-2026-119977
  • UnreviewedGitHubWorthes/CVE-2026-119977-WordPress-Upgrade-RCE-Bypasses-7.1.4
  • UnreviewedGitHubtc4dy/CVE-2026-119977-Toolkit
  • UnreviewedGitHubriabinov/CVE-2026-119977
  • UnreviewedGitHubmehmet-emir-eroglu/CVE-2026-119977
  • UnreviewedGitHubBugStealers/CVE-2026-119977
  • UnreviewedGitHubBlackHatExploitation/CVE-2026-119977

Third-party code, not reviewed by VulnCrest. Fake PoC repositories regularly contain malware. Read the code before running anything, and only run it against a lab you own.

Advisories & patches

Timeline

  1. CVE published

    Severity high, CVSS 8.1

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
KEV status
CISA Known Exploited Vulnerabilities catalog (CC0 1.0).
EPSS
Exploit Prediction Scoring System by FIRST.org.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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