critical CVSS 9.1

CVE-2026-25233·PHP vulnerability

PEAR is a framework and distribution system for reusable PHP components. Prior to version 1.33.0, logic bug in the roadmap role check allows non-lead maintainers to create, update, or delete roadmaps. This issue has been patched in version 1.33.0.

Severity
critical
Software
PHP
Fixed in
1.33.0
Published
2026-02-03

Affected versions

Until: 1.33.0

Fixed in: 1.33.0

How to fix this CVE

Update PHP and the PEAR framework to version 1.33.0 or later to patch a critical authorization bypass in the roadmap management feature. This vulnerability allows unauthorized users to modify or delete roadmaps due to insufficient privilege validation in the role-checking logic. Immediate patching is essential to prevent unauthorized changes to your PHP project roadmap infrastructure.

sudo dnf update php php-pear

Defensia detects this vulnerability

How to check if you are affected

  1. Step 1: Check your installed PHP and PEAR version by running 'php -v' and 'pear version'
  2. Step 2: Verify PEAR installation directory with 'pear config-get php_dir' and check for /pearweb files
  3. Step 3: Search web server logs for roadmap API endpoints accessed by non-authenticated or non-maintainer IPs: grep -E '(roadmap|api)' /var/log/apache2/access.log | grep -vE '(GET|POST|PUT|DELETE).*(200|304)' to find failed requests that may indicate exploitation attempts
  4. Step 4: After patching, confirm the version with 'pear version' and verify it reports 1.33.0 or higher

FAQ

What is CVE-2026-25233?

This is a critical authorization bypass vulnerability in PEAR's roadmap role-checking mechanism that permits non-lead maintainers to perform privileged operations like creating, updating, or deleting roadmaps without proper permission validation.

Is CVE-2026-25233 being actively exploited?

No, this vulnerability is not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog and no public exploits are available, though the critical CVSS score of 9.1 warrants immediate patching.

What versions of PHP are affected by CVE-2026-25233?

All versions of PHP with PEAR framework prior to version 1.33.0 are affected; the exact lower bound is not specified in the advisory.

How do I check if my server is vulnerable to CVE-2026-25233?

Run 'pear version' and compare the output against 1.33.0; if your version is lower, your system is vulnerable. You can also check the PEAR install directory for pearweb components with 'ls -la $(pear config-get php_dir)/PEAR/'

Does Defensia detect CVE-2026-25233?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If PHP and PEAR are installed on a monitored server, CVE-2026-25233 will appear in your dashboard with remediation steps.

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References

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