Unauthenticated profiling-data exposure via fallback routing
Published Apr 25, 2026 · Updated Apr 25, 2026
Information disclosure in go-kratos Kratos 2.9.0 through 2.9.2 allows remote attackers to read profiling data via HTTP. NewServer assigns the global http.DefaultServeMux to the router's not-found and method-not-allowed fallbacks, so unregistered requests reach handlers installed by package initialization. Exploitation requires a reachable Kratos HTTP service with a handler such as net/http/pprof registered on DefaultServeMux; exposed data includes command-line arguments, goroutine stacks, heap profiles, and traces.
Summary
What happened
Information disclosure in go-kratos Kratos 2.9.0 through 2.9.2 allows remote attackers to read profiling data via HTTP. NewServer assigns the global http.DefaultServeMux to the router's not-found and method-not-allowed fallbacks, so unregistered requests reach handlers installed by package initialization. Exploitation requires a reachable Kratos HTTP service with a handler such as net/http/pprof registered on DefaultServeMux; exposed data includes command-line arguments, goroutine stacks, heap profiles, and traces.
The record
- CVE
- CVE-2026-6993
- Published
- Apr 25, 2026
- Updated
- Apr 25, 2026
- Vendor
- go-kratos
- Product
- Kratos
- Classifications
- CWE-441, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 25, 2026CVE publishedPublication date reported by the CVE source.
- Apr 25, 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=2.9.0
- Affected versionversion=2.9.1
- Affected versionversion=2.9.2
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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- DefaultServeMux fallback profiling-endpoint proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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