Allocation of Resources Without Limits or Throttling Affecting traffic_server package, versions [9.0.0,9.2.11)[10.0.0,10.0.6)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published22 Jul 2025
- disclosed19 Jun 2025
- creditYohann Sillam
Introduced: 19 Jun 2025
CVE-2025-49763 (opens in a new tab)How to fix?
Upgrade traffic_server to version 9.2.11, 10.0.6 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the ESI plugin when processing nested inclusions. An attacker can exhaust system resources and cause a denial of service by sending specially crafted requests that trigger excessive inclusion depth. This is only exploitable if the ESI plugin is enabled.
Workaround
This vulnerability can be mitigated by configuring the plugin with the --max-inclusion-depth setting to limit the inclusion depth.