What is the CVSS score of CVE-2026-26336?

CVE-2026-26336 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

How to fix or mitigate CVE-2026-26336?

Within 24 hours: Identify all Alfresco instances in your environment and validate exposure by testing the /share/page/resource/ endpoint from external networks. Within 7 days: Implement network-level access controls restricting external access to the Alfresco application or deploy WAF rules blocking requests to the vulnerable endpoint. Within 30 days: Rotate all credentials and secrets potentially exposed in WEB-INF directories (database passwords, API keys, encryption keys) and conduct a full audit of accessed files in application logs.

Alfresco Content Services CVE-2026-26336

HIGH

Incorrect Authorization (CWE-863)

2026-02-19 disclosure@vulncheck.com

Authentication Bypass Information Disclosure Alfresco Content Services Hyland

7.5

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Send HTTP request to /share/page/resource/ endpoint
Exploit

Traverse directory path to WEB-INF directory
Execution

Retrieve protected configuration files
Impact

Exfiltrate sensitive data

Vulnerability Assessment

Weakness	CWE CWE-863 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V8 - Authorization Authorization logic validation MITRE ATT&CK 1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	No special conditions — remote unauthenticated exploitation against default Hyland Alfresco installations with /share/page/resource/ endpoint accessible without authentication.
Impact	CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Exploitation no authentication required.
Exploit ScenarioDerived	An attacker without authentication could exploit this vulnerability to read arbitrary files from protected directories (like WEB-INF) via the "/share/p.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Unauthenticated attackers can bypass access controls in Alfresco Content Services to retrieve sensitive files from protected directories such as WEB-INF through the /share/page/resource/ endpoint. This vulnerability exposes critical configuration data and credentials without requiring authentication or user interaction. No patch is currently available for this remotely exploitable issue affecting Alfresco deployments.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:03 CVSS 7.5

Hyland Alfresco allows unauthenticated attackers to read arbitrary files from protected directories (like WEB-INF) via the "/share/page/resource/" endpoint, thus leading to the disclosure of sensitive configuration files. [CVSS 7.5 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-863 (Incorrect Authorization). Affects Alfresco Content Services. Hyland Alfresco allows unauthenticated attackers to read arbitrary files from protected directories (like WEB-INF) via the "/share/page/resource/" endpoint, thus leading to the disclosure of sensitive configuration files.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

DescriptionCVE.org

Executive ViewAI

Why It Matters

Hyland Alfresco installations are vulnerable to unauthenticated file disclosure attacks that could expose sensitive configuration files, database credentials, and system secrets stored in protected directories. Any organization using Alfresco without immediate mitigation is at risk of credential compromise and subsequent lateral movement within their infrastructure.

Business Impact: High

Compensating Controls

Deploy WAF rules to block HTTP requests matching patterns: /share/page/resource/* and variants. 2) Restrict network access to Alfresco instances using firewall rules—limit to authorized IP ranges only. 3) Implement reverse proxy authentication requiring credentials before reaching the application. 4) Disable or restrict the /share/page/resource/ endpoint if not operationally required. 5) Enable and monitor detailed application logging to detect exploitation attempts. 6) Immediately rotate all credentials stored in WEB-INF configuration files as a precautionary measure.

Threat Intelligence Overview

EPSS Score

0.1%

Top 81% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +38

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.