CVE-2024-49254
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 · uneditedImproper Control of Generation of Code ('Code Injection') vulnerability in sunjianle ajax-extend ajax-extend allows Code Injection.This issue affects ajax-extend: from n/a through <= 1.0.
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 confidenceCode injection vulnerability in the ajax-extend library allows attackers to inject and execute arbitrary code through improper control of code generation. This stems from unsafe handling of user input that gets evaluated or executed without proper sanitization.
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
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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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Locate ajax-extend library in your projectSearch for ajax-extend in package.json, package-lock.json, or node_modules directory. Run: npm list ajax-extend or grep -r 'ajax-extend' .Affected if ajax-extend is not found in your dependencies - you are not affected. If found, proceed to version check.
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Identify installed version of ajax-extendRun: npm list ajax-extend --depth=0 or check the version field in package.json for ajax-extendAffected if You are potentially affected if ajax-extend is present and you cannot confirm it has been patched against this code injection vulnerability.
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Check if your application passes user input to ajax-extendReview code that uses ajax-extend. Search for patterns where request parameters, user data, or external input flows into ajax-extend function calls.Affected if If user-controlled data is passed to ajax-extend functions without sanitization, you may be affected.
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Inspect for unsafe code evaluation patternsSearch source files for usage of eval, Function constructor, or similar dynamic code execution combined with ajax-extend. Run: grep -rn 'eval\|Function\|ajax-extend' .Affected if If ajax-extend is used in contexts involving dynamic code generation from untrusted input, the vulnerability is present.
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Review ajax-extend API usage for code generation featuresExamine documentation or source code of ajax-extend to identify which functions handle code generation or could lead to code execution.Affected if Any use of ajax-extend features that generate or execute code from input data indicates potential exposure.
You are affected if ajax-extend library is present in your environment AND user input can reach ajax-extend functions that perform unsafe code generation or evaluation without sanitization.
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 dataImplement strict input validation and sanitization; avoid using unsafe code execution functions (eval, Function constructor, etc.) or ensure any dynamically generated code is strictly controlled and never derived from untrusted input.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-49254 — 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-2024-49254 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
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