Run static analysis (SAST) on the codebase looking for the unsafe pattern in the data flow.
CWE-317 Variant Draft
Cleartext Storage of Sensitive Information in GUI
This vulnerability occurs when an application stores sensitive data, such as passwords or personal information, in plain text within its graphical user interface (GUI) elements.
Definition
What is CWE-317?
This vulnerability occurs when an application stores sensitive data, such as passwords or personal information, in plain text within its graphical user interface (GUI) elements.
Attackers can bypass the visual protections of a GUI by using automated tools or APIs to directly query interface objects like windows, text fields, or menus. Even if the data appears masked or hidden on-screen, these methods can often extract the raw, cleartext information, completely undermining the intended security.
Furthermore, developers sometimes attempt to obscure data with simple encodings like Base64 or ROT13 within the GUI layer. However, these are not encryption and are easily reversible. An attacker can quickly identify the encoding scheme and decode the information, rendering such obfuscation ineffective as a security control.
Real-world impact
Real-world CVEs caused by CWE-317
-
Unencrypted passwords stored in GUI dialog may allow local users to access the passwords.
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-317
- 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-317
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-317 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-317?
How serious is CWE-317?
What languages or platforms are affected by CWE-317?
How can I prevent CWE-317?
How does Plexicus detect and fix CWE-317?
Where can I learn more about CWE-317?
Frequently asked questions
What is CWE-317?
This vulnerability occurs when an application stores sensitive data, such as passwords or personal information, in plain text within its graphical user interface (GUI) elements.
How serious is CWE-317?
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-317?
MITRE lists the following affected platforms: Windows.
How can I prevent CWE-317?
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-317?
Plexicus's SAST engine matches the data-flow signature for CWE-317 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-317?
MITRE publishes the canonical definition at https://cwe.mitre.org/data/definitions/317.html. You can also reference OWASP and NIST documentation for adjacent guidance.
Related weaknesses
Weaknesses related to CWE-317
CWE-312 Parent
Cleartext Storage of Sensitive Information
This vulnerability occurs when an application stores sensitive data like passwords, credit card numbers, or personal information in plain…
CWE-313 Sibling
Cleartext Storage in a File or on Disk
This vulnerability occurs when an application writes sensitive data, such as passwords or personal information, directly to a file or disk…
CWE-314 Sibling
Cleartext Storage in the Registry
This vulnerability occurs when an application saves sensitive data, like passwords or keys, as plain text in the Windows Registry.
CWE-315 Sibling
Cleartext Storage of Sensitive Information in a Cookie
This vulnerability occurs when an application directly stores sensitive data, like session tokens or personal details, in a browser cookie…
CWE-316 Sibling
Cleartext Storage of Sensitive Information in Memory
This vulnerability occurs when an application stores sensitive data, such as passwords or encryption keys, in memory without any form of…
CWE-318 Sibling
Cleartext Storage of Sensitive Information in Executable
This vulnerability occurs when an application embeds sensitive information, like passwords or keys, directly within its executable code…
CWE-526 Sibling
Cleartext Storage of Sensitive Information in an Environment Variable
This vulnerability occurs when an application stores sensitive data, such as passwords or API keys, as plain text in an environment…
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