Run static analysis (SAST) on the codebase looking for the unsafe pattern in the data flow.
CWE-592 Class Deprecated
DEPRECATED: Authentication Bypass Issues
This entry has been retired because its core concept—authentication bypass vulnerabilities—is fully covered by CWE-287: Improper Authentication. It was removed to eliminate redundancy and streamline…
Definition
What is CWE-592?
This entry has been retired because its core concept—authentication bypass vulnerabilities—is fully covered by CWE-287: Improper Authentication. It was removed to eliminate redundancy and streamline the CWE list.
CWE-592 was deprecated to simplify the vulnerability landscape for developers and security professionals. Instead of having multiple entries describing the same fundamental problem—systems failing to properly verify a user's identity—the focus is now consolidated under CWE-287. This makes it easier to find relevant guidance and resources in one central location.
When researching authentication flaws, developers should refer to CWE-287, which comprehensively covers scenarios where missing or weak authentication checks allow attackers to impersonate users or gain unauthorized access. Consolidating these concepts helps in building more consistent security testing practices, threat models, and mitigation strategies around the single critical failure point of improper authentication.
Real-world impact
Real-world CVEs caused by CWE-592
No public CVE references are linked to this CWE in MITRE's catalog yet.
How attackers exploit it
Step-by-step attacker path
- 1
Identify a code path that handles untrusted input without validation.
- 2
Craft a payload that exercises the unsafe behavior — injection, traversal, overflow, or logic abuse.
- 3
Deliver the payload through a normal request and observe the application's reaction.
- 4
Iterate until the response leaks data, executes attacker code, or escalates privileges.
Vulnerable code example
Vulnerable pseudo
MITRE has not published a code example for this CWE. The pattern below is illustrative — see Resources for canonical references.
// Example pattern — see MITRE for the canonical references.
function handleRequest(input) {
// Untrusted input flows directly into the sensitive sink.
return executeUnsafe(input);
} Secure code example
Secure pseudo
// Validate, sanitize, or use a safe API before reaching the sink.
function handleRequest(input) {
const safe = validateAndEscape(input);
return executeWithGuards(safe);
} What changed: the unsafe sink is replaced (or the input is validated/escaped) so the same payload no longer triggers the weakness.
Prevention checklist
How to prevent CWE-592
- Architecture Use safe-by-default frameworks and APIs that prevent the unsafe pattern from being expressible.
- Implementation Validate input at trust boundaries; use allowlists, not denylists.
- Implementation Apply the principle of least privilege to credentials, file paths, and runtime permissions.
- Testing Cover this weakness in CI: SAST rules + targeted unit tests for the data flow.
- Operation Monitor logs for the runtime signals listed in the next section.
Detection signals
How to detect CWE-592
Run dynamic application security testing against the live endpoint.
Watch runtime logs for unusual exception traces, malformed input, or authorization bypass attempts.
Code review: flag any new code that handles input from this surface without using the validated framework helpers.
Plexicus auto-detects CWE-592 and opens a fix PR in under 60 seconds.
Codex Remedium scans every commit, identifies this exact weakness, and ships a reviewer-ready pull request with the patch. No tickets. No hand-offs.
Frequently asked questions What is CWE-592?
How serious is CWE-592?
What languages or platforms are affected by CWE-592?
How can I prevent CWE-592?
How does Plexicus detect and fix CWE-592?
Where can I learn more about CWE-592?
Frequently asked questions
What is CWE-592?
This entry has been retired because its core concept—authentication bypass vulnerabilities—is fully covered by CWE-287: Improper Authentication. It was removed to eliminate redundancy and streamline the CWE list.
How serious is CWE-592?
MITRE has not published a likelihood-of-exploit rating for this weakness. Treat it as medium-impact until your threat model proves otherwise.
What languages or platforms are affected by CWE-592?
MITRE has not specified affected platforms for this CWE — it can apply across most application stacks.
How can I prevent CWE-592?
Use safe-by-default frameworks, validate untrusted input at trust boundaries, and apply the principle of least privilege. Cover the data-flow signature in CI with SAST.
How does Plexicus detect and fix CWE-592?
Plexicus's SAST engine matches the data-flow signature for CWE-592 on every commit. When a match is found, our Codex Remedium agent opens a fix PR with the corrected code, tests, and a one-line summary for the reviewer.
Where can I learn more about CWE-592?
MITRE publishes the canonical definition at https://cwe.mitre.org/data/definitions/592.html. You can also reference OWASP and NIST documentation for adjacent guidance.
Related weaknesses
Weaknesses related to CWE-592
No related weaknesses indexed for this CWE.
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