CWE-84
Improper Neutralization of Encoded URI Schemes in a Web Page
The web application improperly neutralizes user-controlled input for executable script disguised with URI encodings.
CVE-2024-52890 (GCVE-0-2024-52890)
Vulnerability from cvelistv5
Published
2025-08-05 13:45
Modified
2025-08-05 14:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
IBM Engineering Lifecycle Optimization - Publishing 7.0.2 and 7.03 could be susceptible to cross-site scripting due to no validation of URIs.
References
| ▼ | URL | Tags |
|---|---|---|
| https://www.ibm.com/support/pages/node/7241392 | vendor-advisory, patch |
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| IBM | IBM Engineering Lifecycle Optimization - Publishing |
Version: 7.0.2 ≤ Version: 7.0.3 ≤ cpe:2.3:a:ibm:engineering_lifecycle_optimization_-_publishing:7.0.2:*:*:*:*:*:*:* cpe:2.3:a:ibm:engineering_lifecycle_optimization_-_publishing:7.0.3:*:*:*:*:*:*:* |
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CVE-2025-58444 (GCVE-0-2025-58444)
Vulnerability from cvelistv5
Published
2025-09-08 21:24
Modified
2025-09-09 13:31
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-84 - Improper Neutralization of Encoded URI Schemes in a Web Page
Summary
The MCP inspector is a developer tool for testing and debugging MCP servers. A cross-site scripting issue was reported in versions of the MCP Inspector local development tool prior to 0.16.6 when connecting to untrusted remote MCP servers with a malicious redirect URI. This could be leveraged to interact directly with the inspector proxy to trigger arbitrary command execution. Users are advised to update to 0.16.6 to resolve this issue.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| modelcontextprotocol | inspector |
Version: < 0.16.6 |
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Mitigation
Phase: Implementation
Strategy: Input Validation
Description:
- Resolve all URIs to absolute or canonical representations before processing.
Mitigation
Phase: Implementation
Strategy: Input Validation
Description:
- Carefully check each input parameter against a rigorous positive specification (allowlist) defining the specific characters and format allowed. All input should be neutralized, not just parameters that the user is supposed to specify, but all data in the request, including tag attributes, hidden fields, cookies, headers, the URL itself, and so forth. A common mistake that leads to continuing XSS vulnerabilities is to validate only fields that are expected to be redisplayed by the site. We often encounter data from the request that is reflected by the application server or the application that the development team did not anticipate. Also, a field that is not currently reflected may be used by a future developer. Therefore, validating ALL parts of the HTTP request is recommended.
Mitigation ID: MIT-30.1
Phase: Implementation
Strategy: Output Encoding
Description:
- Use and specify an output encoding that can be handled by the downstream component that is reading the output. Common encodings include ISO-8859-1, UTF-7, and UTF-8. When an encoding is not specified, a downstream component may choose a different encoding, either by assuming a default encoding or automatically inferring which encoding is being used, which can be erroneous. When the encodings are inconsistent, the downstream component might treat some character or byte sequences as special, even if they are not special in the original encoding. Attackers might then be able to exploit this discrepancy and conduct injection attacks; they even might be able to bypass protection mechanisms that assume the original encoding is also being used by the downstream component.
- The problem of inconsistent output encodings often arises in web pages. If an encoding is not specified in an HTTP header, web browsers often guess about which encoding is being used. This can open up the browser to subtle XSS attacks.
Mitigation ID: MIT-43
Phase: Implementation
Description:
- With Struts, write all data from form beans with the bean's filter attribute set to true.
Mitigation ID: MIT-31
Phase: Implementation
Strategy: Attack Surface Reduction
Description:
- To help mitigate XSS attacks against the user's session cookie, set the session cookie to be HttpOnly. In browsers that support the HttpOnly feature (such as more recent versions of Internet Explorer and Firefox), this attribute can prevent the user's session cookie from being accessible to malicious client-side scripts that use document.cookie. This is not a complete solution, since HttpOnly is not supported by all browsers. More importantly, XMLHTTPRequest and other powerful browser technologies provide read access to HTTP headers, including the Set-Cookie header in which the HttpOnly flag is set.
No CAPEC attack patterns related to this CWE.