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The vulnerability stems from uncontrolled recursion during HTTP header comment parsing. The advisory explicitly mentions stack exhaustion from deeply nested comments, and the patch introduced 'max-comment-parsing-depth' configuration. The workaround suggests disabling modeled header parsing, implicating HeaderParser's comment handling. While exact code isn't available, Akka's architecture places header parsing logic in HeaderParser.scala, with recursive comment parsing being a common pattern in parser implementations. The CWE-674 classification further supports the recursion control failure hypothesis.
| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| com.typesafe.akka:akka-http | maven | >= 10.1.0, <= 10.2.6 | 10.2.7 |
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