CRITICAL 9.1 Microsoft

CVE-2025-22871

Request smuggling due to acceptance of invalid chunked data in net/http

Microsoft Security Update 2025-Apr: Request smuggling due to acceptance of invalid chunked data in net/http

Affected Products

cbl2 golang 1.22.7-3 on CBL Mariner 2.0
cbl2 msft-golang 1.24.1-2 on CBL-Mariner 2.0
cbl2 golang 1.18.8-7 on CBL-Mariner 2.0
cbl2 golang 1.22.7-3 on CBL-Mariner 2.0
cbl2 msft-golang 1.24.1-2 on CBL Mariner 2.0
cbl2 golang 1.18.8-7 on CBL Mariner 2.0
azl3 golang 1.27.0-1 on Azure Linux 3.0

References

Published: 2025-04-08 · Source: Microsoft · Feed updated: 2026-09-24

This critical severity vulnerability with a CVSS score of 9.1 was published on 2025-04-08 via Microsoft. Affected: cbl2 golang 1.22.7-3 on CBL Mariner 2.0, cbl2 msft-golang 1.24.1-2 on CBL-Mariner 2.0, cbl2 golang 1.18.8-7 on CBL-Mariner 2.0 and 4 more.

Risk Timeline

CVE Disclosed2025-04-08 · 534 days ago

Remediation Resources

Official Advisory

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-22871

NVD / MITRE

nvd.nist.gov/vuln/detail/CVE-2025-22871

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