SSRF amplification via reset redirect counters
Published Jul 29, 2026 · Updated Jul 29, 2026
Server-side request forgery in Apache Traffic Server allows remote attackers to amplify outbound requests by bypassing redirect limits. During redirect handling, a plugin can reset the retry counter that enforces the redirect limit, allowing the request chain to continue beyond that limit. Exploitation requires network access and a plugin that resets the counter; the published assessment reports availability impact without direct data disclosure or modification.
Summary
What happened
Server-side request forgery in Apache Traffic Server allows remote attackers to amplify outbound requests by bypassing redirect limits. During redirect handling, a plugin can reset the retry counter that enforces the redirect limit, allowing the request chain to continue beyond that limit. Exploitation requires network access and a plugin that resets the counter; the published assessment reports availability impact without direct data disclosure or modification.
The record
- CVE
- CVE-2026-58189
- Published
- Jul 29, 2026
- Updated
- Jul 29, 2026
- Vendor
- The Apache Software Foundation
- Product
- Apache Traffic Server
- Classifications
- CWE-918
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 29, 2026CVE publishedPublication date reported by the CVE source.
- Jul 29, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.0 <=10.1.3
- Affected versionversion=8.0.0 <=8.1.9
- Affected versionversion=9.0.0 <=9.2.14
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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