CVE-2026-35255
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 · uneditedVulnerability in the Oracle Cloud Native Environment Command Line Interface product of Oracle Open Source Projects. The supported versions that is affected is v2.3.2. Easily exploitable vulnerability allows unauthenticated attacker to compromise Oracle Cloud Native Environment Command Line Interface product via a malicious environment variable. Successful attacks of this vulnerability can result in Oracle Cloud Native Environment Command Line Interface allowing users to execute arbitrary code.
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 · moderate confidenceOracle Cloud Native Environment CLI v2.3.2 contains a vulnerability where a malicious environment variable can be leveraged by an unauthenticated attacker to execute arbitrary code. The flaw appears to stem from improper validation or sanitization of environment variable contents before use in command execution, allowing code injection.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 2.3.2CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
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 Oracle Cloud Native Environment CLI versionRun 'cnenv --version' or 'cnenv version' to display the installed CLI version. If the cnenv command is not in PATH, locate it via 'find /usr -name cnenv 2>/dev/null' or 'find /opt -name cnenv 2>/dev/null' and execute directly.Affected if The displayed version is exactly 2.3.2
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Verify CLI binary version directlyExecute the cnenv binary with version flag or check binary metadata. On Linux systems, use 'cnenv version' or inspect the binary file directly if the command fails.Affected if The binary reports version 2.3.2 exactly
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Audit environment variable usage with cnenvReview scripts, systemd units, or automation that invoke the cnenv CLI and identify if untrusted or user-supplied environment variables are passed to cnenv processes. Search for patterns like 'env $VAR cnenv' or environment variable interpolation in calling code.Affected if Untrusted or dynamically constructed environment variables can be passed to cnenv command execution
If the installed Oracle Cloud Native Environment CLI is exactly version 2.3.2 and accepts untrusted environment variable input, the environment is vulnerable to arbitrary code execution via environment variable injection.
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 to a patched version of Oracle Cloud Native Environment CLI when available. In the interim, restrict or audit environment variables passed to the CLI process and limit access to the CLI tool to authenticated, authorized personnel only.
- Consultation4.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,040.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-35255 — 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-2026-35255 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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- Version or environment caveats, and links to real fixes
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