Apache Traffic Server accepts characters that are not allowed for HTTP field names and forwards malformed requests to origin servers. This can be utilized for request smuggling and may also lead cache poisoning if the origin servers are vulnerable. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4. Users are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.

HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected. Users can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases. Users are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Traffic Server.This issue affects Apache Traffic Server: from 8.0.0 through 8.1.8, from 9.0.0 through 9.2.2. Users are recommended to upgrade to version 8.1.9 or 9.2.3, which fixes the issue.

Improper Input Validation vulnerability in Apache Traffic Server with malformed HTTP/2 frames.This issue affects Apache Traffic Server: from 9.0.0 through 9.2.2. Users are recommended to upgrade to version 9.2.3, which fixes the issue.

Improper Input Validation vulnerability in Apache Software Foundation Apache Traffic Server.This issue affects Apache Traffic Server: through 9.2.1.

Improper input validation vulnerability on the range header in Apache Software Foundation Apache Traffic Server.This issue affects Apache Traffic Server: through 9.2.1.

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Software Foundation Apache Traffic Server.This issue affects Apache Traffic Server: from 8.0.0 through 9.2.0. 8.x users should upgrade to 8.1.7 or later versions 9.x users should upgrade to 9.2.1 or later versions

Improper Input Validation vulnerability in Apache Software Foundation Apache Traffic Server.  The configuration option proxy.config.http.push_method_enabled didn't function.  However, by default the PUSH method is blocked in the ip_allow configuration file.This issue affects Apache Traffic Server: from 8.0.0 through 9.2.0. 8.x users should upgrade to 8.1.7 or later versions 9.x users should upgrade to 9.2.1 or later versions

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Software Foundation Apache Traffic Server.This issue affects Apache Traffic Server: 8.0.0 to 9.2.0.

Improper Input Validation vulnerability for the xdebug plugin in Apache Software Foundation Apache Traffic Server can lead to cross site scripting and cache poisoning attacks.This issue affects Apache Traffic Server: 9.0.0 to 9.1.3. Users should upgrade to 9.1.4 or later versions.