Authenticated Sharp users can download unrelated Laravel Storage objects through the generic download endpoint
Sharp exposes a generic download endpoint that authorizes access only to the supplied Sharp entity instance, but then reads the target storage `disk` and `path` from request parameters. Because the requested storage object is not bound to the authorized entity instance, an authenticated Sharp user who can view one valid record may use that record a...
CVSS 7.7 LOW. SENTINEL APEX recommends immediate patch evaluation. Intelligence from 1 confirmed source(s).
📋 Executive Summary
This report analyzes CVE-2026-44692 affecting composer code16/sharp. Composite threat score: 43/100. Intelligence corroborated across 1 source(s): github_advisories. CVSS base score: 7.7. No confirmed in-the-wild exploitation at the time of writing; prioritize on exposure, privilege, and CVSS.
⚠️ Business Impact Analysis
- ⚠️ Authentication bypass — all access controls circumvented
🔗 Representative Attack Path
A typical attack path for this vulnerability class, mapped to MITRE ATT&CK — a representative model to guide detection and defense, not a claim of observed activity against a specific target. Confirm specifics against the primary sources below.
| # | Phase | Attacker Action | MITRE |
|---|---|---|---|
1 |
Reconnaissance | Attacker identifies exposed code16/sharp instances via Shodan, Censys, or targeted scanning | TA0043 |
2 |
Initial Access | Unauthenticated exploitation — no credentials required. Single HTTP request sufficient | T1190 |
3 |
Persistence | Backdoor, scheduled task, or new admin account created for persistent access | T1053 |
4 |
Command & Control | Attacker establishes persistent C2 channel using HTTPS or DNS tunneling | T1071 |
5 |
Impact / Objectives | Intellectual property theft, espionage, cryptomining, or preparation for future attack stage | T1657 |
⚠ Deep Dive Analysis
This high-severity vulnerability in composer code16/sharp (CVSS 7.7) represents a significant attack surface. SENTINEL APEX assesses exploitation to be technically feasible with moderate effort. Organizations running code16/sharp in internet-facing or privileged positions face immediate risk.
SENTINEL APEX URGENCY: ELEVATED. Score: 43/100 LOW. Patch before exploitation activity begins.
🎯 MITRE ATT&CK Mapping
| Category | Mapping |
|---|---|
| Primary Tactic | Initial Access |
| Primary Technique | T1190 — Exploit Public-Facing Application |
| Sub-Technique | T1078 — Valid Accounts |
| Weakness (CWE) | CWE-639 |
| Intel Type | 🔴 CVE ANALYSIS |
| Source(s) | github_advisories |
🔴 CVE Reference
| CVE ID | Reference | Score |
|---|---|---|
| CVE-2026-44692 | NVD → | 7.7 |
| CVE-2026-44692 | NVD → | 7.7 |
🔍 Detection Rules — Sigma (SIEM)
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📡 Detection Rules — YARA (Endpoint)
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🛡️ SOC Response Playbook
- 1IMMEDIATE (0-1hr): Identify all instances of code16/sharp in your environment via CMDB/asset inventory
- 2IMMEDIATE (0-1hr): Apply vendor patch — no maintenance window exception for LOW threats
- 3IMMEDIATE (1-2hr): If no patch available: implement WAF rules, ACLs, or network-level compensating controls
- 4SHORT-TERM (2-4hr): Deploy Sigma detection rule to SIEM — validate alert generation in test environment
- 5SHORT-TERM (4-8hr): Review logs for exploitation indicators (anomalous code16/sharp requests, error spikes)
- 6SHORT-TERM (8-24hr): Hunt for post-exploitation: new admin accounts, scheduled tasks, lateral movement
- 7MONITOR: Subscribe to composer security advisories for patch updates
- 8ONGOING: Track SENTINEL APEX intelligence feed for follow-on campaigns targeting code16/sharp
📎 Intelligence References
- github.com/advisories/GHSA-748w-hm6r-qc7v
- github.com/code16/sharp/security/advisories/GHSA-748w-hm6r-qc7v
- github.com/code16/sharp/releases/tag/v9.22.0
- github.com/advisories/GHSA-748w-hm6r-qc7v
- 📌 NVD — CVE-2026-44692
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Report ID: SENTINEL-CVE-2026-44692-2026-05-15 | Priority: 43/100 LOW | Sources: 1
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