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A critical vulnerability in Apache Traffic Server arises from truncation of over-long HTTP header names. When a crafted request contains a header name exceeding the implementation’s handled length, Traffic Server truncates the name rather than rejecting it, which can cause the proxy and adjacent components to interpret the request differently. This inconsistent parsing enables header aliasing, where an attacker can cause a malicious header to be treated as a different header after truncation. The resulting parser desynchronization can be leveraged for HTTP request smuggling and for bypassing security policies that rely on exact header-name handling. Affected versions are 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3.
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No public exploit code observed for this vulnerability.
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8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical or high-severity vulnerability in Apache Traffic Server addressed by released security updates.
A critical vulnerability in Apache Traffic Server where over-long header names are truncated, enabling header aliasing, HTTP request smuggling, and policy bypass.
A request smuggling and policy bypass vulnerability in Apache Traffic Server caused by truncation of over-long header names.
A critical vulnerability in Apache Traffic Server where over-long header names are truncated, enabling header aliasing, request smuggling, and policy bypass.
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.