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The CVE-2025-XXXX vulnerability in Apache Traffic Control stems from an inefficient regular expression (regex) within the Traffic Router component’s management interface. An attacker with access to this interface can craft and submit a malicious, complex regex pattern. When the application’s regex engine processes this pattern, it can lead to catastrophic backtracking. This occurs when the engine exhaustively attempts to match the string against the poorly designed pattern, resulting in an extreme consumption of CPU resources. The process enters a state of algorithmic complexity, causing the application to hang or become unresponsive for a significant period. This effectively creates a Denial-of-Service (DoS) condition, rendering the Traffic Router management interface unavailable to legitimate users. Since the project is retired, no official patch is planned.
Platform: Apache Traffic Control
Version: All versions
Vulnerability : Regex DoS
Severity: Low
date: Oct 16, 2025
Prediction: No patch expected.
What Undercode Say:
`curl -X POST http://
`timeout 10 strace -p `
`top -p `
How Exploit:
Craft malicious regex payload.
POST to management API.
Cause CPU exhaustion.
Protection from this CVE
Restrict management interface access.
Use a Web Application Firewall.
Retire the software.
Impact:
Traffic Router management DoS.
High CPU utilization.
Service unavailability.
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Sources:
Reported By: github.com
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