Run static analysis (SAST) on the codebase looking for the unsafe pattern in the data flow.
CWE-1088 Base Incomplete
Synchronous Access of Remote Resource without Timeout
This vulnerability occurs when an application makes a synchronous call to a remote service or resource but does not set a timeout, or sets an infinite one. This leaves the application waiting…
Definition
What is CWE-1088?
This vulnerability occurs when an application makes a synchronous call to a remote service or resource but does not set a timeout, or sets an infinite one. This leaves the application waiting indefinitely for a response.
When a synchronous remote call lacks a timeout, a simple slowdown or outage of the external resource can cause your application to hang. This directly undermines reliability, as a single unresponsive dependency can freeze a critical thread or process, leading to denial of service for legitimate users.
From a security perspective, if an attacker can trigger this flawed code path, they can exploit the reliability weakness to create a vulnerability. By intentionally making the remote resource slow or unresponsive, they can cause resource exhaustion, application stalls, or complete service unavailability, turning an operational flaw into a security incident.
Real-world impact
Real-world CVEs caused by CWE-1088
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-1088
- 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-1088
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.
CWE-1088
Don't catalog this weakness. Prove it's reachable.
Plexicus turns CWE catalogs into evidence: every CWE-pattern is matched against your real code graph, reach is proven on a sandbox clone, and verified findings ship as reviewed PRs.
Frequently asked questions What is CWE-1088?
How serious is CWE-1088?
What languages or platforms are affected by CWE-1088?
How can I prevent CWE-1088?
How does Plexicus detect and fix CWE-1088?
Where can I learn more about CWE-1088?
Frequently asked questions
What is CWE-1088?
This vulnerability occurs when an application makes a synchronous call to a remote service or resource but does not set a timeout, or sets an infinite one. This leaves the application waiting indefinitely for a response.
How serious is CWE-1088?
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-1088?
MITRE has not specified affected platforms for this CWE — it can apply across most application stacks.
How can I prevent CWE-1088?
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-1088?
Plexicus's SAST engine matches the data-flow signature for CWE-1088 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-1088?
MITRE publishes the canonical definition at https://cwe.mitre.org/data/definitions/1088.html. You can also reference OWASP and NIST documentation for adjacent guidance.
Related weaknesses
Weaknesses related to CWE-1088
CWE-821 Parent
Incorrect Synchronization
This vulnerability occurs when multiple parts of a program, such as threads or processes, access a shared resource like a variable, file,…
CWE-1264 Sibling
Hardware Logic with Insecure De-Synchronization between Control and Data Channels
This vulnerability occurs when a hardware design incorrectly forwards data before its security or permission checks have finished…
CWE-572 Sibling
Call to Thread run() instead of start()
This vulnerability occurs when a program incorrectly calls a thread's `run()` method directly, instead of using the `start()` method. This…
CWE-574 Sibling
EJB Bad Practices: Use of Synchronization Primitives
This vulnerability occurs when an Enterprise JavaBeans (EJB) component improperly uses thread synchronization primitives, violating the…
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