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CVE-2017-7559 is an HTTP request/response smuggling vulnerability in Undertow caused by an incomplete fix for CVE-2017-2666. Affected versions continue to accept invalid characters in query strings and path parameters. Where a reverse proxy or other intermediary also accepts those characters but parses them differently, an attacker can create an HTTP parsing discrepancy and inject data into a response.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Undertow HTTP request-smuggling vulnerability caused by parsing HTTP headers containing unusual whitespace; described as an incomplete fix for CVE-2017-2666.
An Undertow HTTP request-smuggling vulnerability involving unusual whitespace parsing; the advisory identifies it as an incomplete fix for CVE-2017-2666.
Undertow HTTP request-smuggling vulnerability caused by parsing HTTP headers containing unusual whitespace; described as an incomplete fix for CVE-2017-2666.
Undertow HTTP request-smuggling flaw due to an incomplete prior fix, allowing invalid-character interpretation discrepancies with proxies and resulting response injection or cache poisoning.
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.