CVE-2026-13047: Reserved CVE Entry Rejection Notice

CVE-2026-13047 Overview

CVE-2026-13047 is a rejected CVE entry in the National Vulnerability Database (NVD). The identifier was reserved in error by Red Hat, which is not the CNA (CVE Numbering Authority) responsible for PHP vulnerabilities. According to the rejection notice, the appropriate CNA should assign CVE IDs for the underlying vulnerabilities. No technical vulnerability details, affected products, or CVSS scores are associated with this entry.

Critical Impact
No security impact exists for this identifier. CVE-2026-13047 has been formally rejected and should not be tracked as an active vulnerability in vulnerability management programs.

Affected Products

Not Available — no products are associated with this rejected CVE
Not Available — the entry was reserved in error
Not Available — the appropriate CNA should reassign IDs to any underlying PHP issues

Discovery Timeline

2026-08-24 - CVE-2026-13047 published to NVD as rejected
2026-08-24 - Last updated in NVD database

Technical Details for CVE-2026-13047

Vulnerability Analysis

CVE-2026-13047 contains no technical vulnerability content. The record is a placeholder that NVD has marked as rejected. The rejection statement notes that Red Hat reserved the identifier but is not the CNA for PHP, so the reservation was inappropriate under the CVE Program's rules governing CNA scope.

CNA scope defines which vendors or projects a given CVE Numbering Authority may assign identifiers for. When a CNA reserves an ID outside its scope, the CVE Program rejects the entry and expects the correct CNA — in this case, the PHP Group — to issue a new identifier if a legitimate vulnerability exists.

Because no vulnerability class, affected version, or exploitation mechanism is documented, no CWE (Common Weakness Enumeration) classification applies. Security teams should not treat this identifier as an actionable finding.

Root Cause

The root cause is administrative, not technical. A CVE ID was reserved outside the reserving party's CNA scope. The CVE Program requires CNAs to operate within their assigned scope, and identifiers reserved in error are rejected to preserve the integrity of the CVE catalog.

Attack Vector

No attack vector applies. There is no software flaw, no exploit path, and no affected component tied to CVE-2026-13047. Any references to PHP vulnerabilities that motivated the original reservation should be tracked under identifiers assigned by the correct CNA.

No verified proof-of-concept, exploit code, or technical reference material exists for this rejected entry. See the CVE Program documentation for information on how rejected entries are handled.

Detection Methods for CVE-2026-13047

Indicators of Compromise

No indicators of compromise apply, because CVE-2026-13047 does not describe a real vulnerability.
Alerts or scanner findings referencing this ID should be reviewed and closed as false positives after confirming the rejected status in NVD.

Detection Strategies

Configure vulnerability management platforms to filter or suppress rejected CVE entries, so analysts do not spend time triaging non-issues.
Cross-reference any scanner output citing CVE-2026-13047 against the NVD entry to confirm the rejection.

Monitoring Recommendations

Monitor official PHP security advisories from the PHP Group for any legitimate CVE IDs that may replace the intent of this rejected reservation.
Track updates to the CVE Program's rejected entries list to keep asset inventories aligned with authoritative data.

How to Mitigate CVE-2026-13047

Immediate Actions Required

Remove CVE-2026-13047 from active vulnerability tracking and remediation queues.
Notify stakeholders and auditors that the identifier is rejected and carries no remediation obligation.
Verify that automated ticketing systems do not create work items for rejected CVE entries.

Patch Information

No patch is available or required. The CVE has been rejected and no software vendor has published fixes tied to this identifier. If a real PHP vulnerability underlies the original reservation, it will be published under a separate CVE assigned by the correct CNA.

Workarounds

No workarounds are needed, because no exploitable condition is described.
Maintain current PHP versions and apply security updates released by the PHP Group through standard patch management.
Subscribe to the PHP security announcements to receive authoritative advisories.

bash

# No mitigation configuration applies to a rejected CVE entry.
# Standard practice: suppress rejected IDs in vulnerability scanners.