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A vulnerability in XML Language Server (lsp4xml) before version 0.9.1, as used in Red Hat XML Language Support (vscode-xml) before 0.9.1, allows for XML External Entity (XXE) attacks via crafted XML documents. The issue resides in the LSPXMLParserConfiguration.java file, where external entities are not properly restricted. This can be exploited to perform server-side request forgery (SSRF) and initiate SMB connections, potentially exposing NetNTLM challenge/response hashes for offline password cracking.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.