Cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:*:*:*:* - CraftedSignal Threat Feedhttps://feed.craftedsignal.io/cpes/cpe2.3amicrosoftsharepoint_server/Trending threats, MITRE ATT&CK coverage, and detection metadata. Fed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioFri, 04 Sep 2026 09:02:53 +0000https://feed.craftedsignal.io/favicon-32x32.pngCraftedSignal Threat Feedhttps://feed.craftedsignal.io/3232https://feed.craftedsignal.io/favicon.svgExploitation of CVE-2024-30043 XXE in Microsoft SharePoint Serverhttps://feed.craftedsignal.io/briefs/2026-09-cve-2024-30043-xxe/Fri, 04 Sep 2026 09:02:53 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-09-cve-2024-30043-xxe/A publicly available exploit for CVE-2024-30043 allows unauthenticated remote attackers to perform XML External Entity (XXE) injection against Microsoft SharePoint Server via URL parsing confusion, potentially leading to sensitive data disclosure.CVE-2024-30043 is an XML External Entity (XXE) injection vulnerability affecting Microsoft SharePoint Server. The vulnerability is caused by improper handling of URL parsing, which allows an attacker to manipulate XML entities processed by the server. By sending specially crafted HTTP requests to the target SharePoint instance, an unauthenticated attacker can force the server to parse malicious XML, resulting in the disclosure of local files or internal resources. A proof-of-concept (PoC) Python script has been published on the KitPloit platform, confirming the exploitability of the flaw on SharePoint Server 2019 versions including 16.0.10409.20027. Defenders should prioritize patching, as the availability of functional exploit code significantly increases the risk of exploitation in the wild.

Attack Chain

  1. Attacker identifies an internet-facing Microsoft SharePoint Server instance.
  2. Attacker crafts a malicious HTTP request leveraging URL parsing confusion to embed an external DTD (Document Type Definition) reference.
  3. Attacker sends the crafted POST request to the target SharePoint application endpoint.
  4. The SharePoint server processes the XML payload, triggering the XXE vulnerability during the parsing phase.
  5. The server attempts to resolve the external entity, allowing the attacker to access restricted files or internal network resources.
  6. The server returns the contents of the requested resource back to the attacker via the HTTP response.
  7. Attacker successfully exfiltrates sensitive server-side data (e.g., configuration files or internal service responses).

Impact

Successful exploitation of CVE-2024-30043 allows unauthorized actors to read arbitrary files from the SharePoint server or reach internal services. This leads to the loss of confidentiality regarding server configuration, sensitive business data, and potentially internal network architecture information. The vulnerability affects SharePoint Server 2016 and 2019 versions prior to build 16.0.17328.20292.

Recommendation

Prioritized actions for security teams:

  • Patch all Microsoft SharePoint Server deployments to build 16.0.17328.20292 or later immediately.
  • Inspect web access logs for anomalous POST requests containing XML-related keywords or unusual URL parsing patterns targeting SharePoint endpoints.
  • Audit internet-facing SharePoint instances to ensure they are not exposing sensitive backend XML processing interfaces.
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