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Apache Traffic Server contains a protocol conversion flaw in its HTTP/2 to HTTP/1 translation path. When acting on responses from an HTTP/2 origin and forwarding them to HTTP/1 clients, the server can pass origin trailers downstream without applying proper HTTP/1 chunked-transfer framing. This results in malformed or ambiguous HTTP/1 message construction during cross-protocol conversion. The issue affects Apache Traffic Server versions 10.0.0 through 10.1.3.
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No public exploit code observed for this vulnerability.
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A vulnerability in Apache Traffic Server where HTTP/2 origin trailers are forwarded to HTTP/1 clients without proper chunked framing during HTTP/2 to HTTP/1 conversion.
An HTTP protocol handling vulnerability in Apache Traffic Server caused by unsafe forwarding of HTTP/2 origin trailers to HTTP/1 clients.
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.