CVE-2026-2339
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedMissing Authentication for Critical Function vulnerability in TUBITAK BILGEM Software Technologies Research Institute Liderahenk allows Remote Code Inclusion, Privilege Abuse, Command Injection. This issue affects Liderahenk: before 3.5.1.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceMissing authentication on a critical function in TUBITAK BILGEM Liderahenk (versions before 3.5.1) enables unauthenticated attackers to inject remote code, abuse privileges, and execute commands. This is a pre-authentication Remote Code Execution (RCE) vulnerability stemming from the absence of access controls on a sensitive endpoint.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify if Liderahenk is installedSearch for Liderahenk installation directories, services, or application files on the system. Common locations may include /opt/, /usr/local/, or application data directories. Check system services or daemon listings for 'liderahenk' or 'lider' processes.Affected if Liderahenk software is found running on the system
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Determine the installed versionLocate version information in installation files, configuration files, or the application itself. Check README files, version metadata, or query the application for its version number using any available CLI tool or API endpoint.Affected if The installed version is lower than 3.5.1 (e.g., 3.5.0, 3.4.x, or any version number below 3.5.1)
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Identify the vulnerable endpointReview application documentation or network configuration to determine the URL or API path of the sensitive function that lacks authentication. This is the endpoint that should require auth but does not.Affected if The endpoint exists and accepts connections without requiring authentication credentials
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Verify network exposure of the endpointTest connectivity to the identified endpoint from an untrusted network perspective. Attempt to access the endpoint without providing any authentication tokens or credentials.Affected if The endpoint is reachable from network locations that should not have access, or accepts requests without authentication challenges
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Confirm pre-authentication accessSend a request to the sensitive endpoint without including any authentication headers, cookies, or credentials. Observe whether the request is processed rather than rejected with an authentication error.Affected if The endpoint returns a successful response or executes the requested function without requiring authentication
The environment is affected if Liderahenk version is below 3.5.1 and the unauthenticated endpoint is accessible, as this allows pre-authentication remote code execution.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade Liderahenk to version 3.5.1 or later to obtain the authentication patch. If immediate upgrade is not feasible, implement network-level access controls to restrict exposure of the affected endpoints.
- Consultation4.0 h
- Implementation6.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-2339 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-2339 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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