How to Fix CVE-2026-41463: ProjeQtor (Bundle Sibling)
By Sai Kiran Pandrala
Last verified: 2026-05-25
CVE-2026-41463 is a sibling vulnerability in the same vendor advisory as CVE-2026-41462. Applying the patched build named in the primary write-up closes this CVE as well.
| Severity | CVSS 8.7 - High |
|---|---|
| Actively exploited? | Not currently in CISA KEV |
| Affected | Same as the bundle - see CVE-2026-41462 |
| Fixed in | Same patched build as CVE-2026-41462 (12.4.4) |
| Type (CWE) | CWE-22: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') |
What's different about CVE-2026-41463?
ProjeQtor versions 7.0 through 12.4.3 contain a ZipSlip path traversal vulnerability in the plugin upload functionality that allows authenticated attackers with upload permissions to write files outside the intended extraction directory by crafting ZIP archives with directory traversal sequences. Attackers can exploit unvalidated archive extraction to write a PHP webshell to a web-accessible directory and achieve remote code execution with the privileges of the web server process.
The technical impact and remediation are identical to the primary CVE in the bundle. The same vendor patch closes both.
How to fix CVE-2026-41463
Apply the patched build per the primary write-up: How to Fix CVE-2026-41462.
The patch installation procedure, verification commands, and interim mitigations are documented there. Reusing one runbook keeps the rollout consistent across the bundle.
Frequently asked questions
Is CVE-2026-41463 fixed by the same patch as CVE-2026-41462?
Yes. CVE-2026-41463 ships in the same vendor advisory as CVE-2026-41462. Applying the patched build named in the primary write-up closes both.
What is the CVSS score for CVE-2026-41463?
The CVSS base score is 8.7 (High).
Is it being exploited?
It is not currently listed in CISA KEV.
References
- Official vendor advisory: https://www.vulncheck.com/advisories/projeqtor-zipslip-path-traversal-via-uploadplugin-php
- NVD entry: https://nvd.nist.gov/vuln/detail/CVE-2026-41463
- CISA KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- Primary write-up: How to Fix CVE-2026-41462
*Part of the ProjeQtor bundle. Full procedure at CVE-2026-41462.*