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CVE-2026-18953 is a path traversal vulnerability in the get_resource tool of Amazon awslabs.aws-transform-mcp-server affecting versions 0.1.0 through 0.1.4. The flaw stems from improper limitation of a pathname to a restricted directory when processing the savePath parameter, allowing a context-dependent actor to cause files to be written outside the intended working directory. Because the vulnerable code permits arbitrary file write via attacker-influenced path selection, exploitation can cross directory boundaries and place content in unintended filesystem locations. In environments where written files are subsequently executed, loaded, or trusted by local processes, this can lead to local code execution.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
8 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.