What’s Vulnerable › Vulnerabilities

CVE-2020-15586

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-17 · updated 2026-06-17
• Weakness: CWE-362

Description

Go before 1.13.13 and 1.14.x before 1.14.5 has a data race in some net/http servers, as demonstrated by the httputil.ReverseProxy Handler, because it reads a request body and writes a response at the same time.

Affected products

• Cloud Foundry cf-deployment: before 13.7.0 — fixed in 13.7.0
• Cloudfoundry Routing-Release: before 0.203.0 — fixed in 0.203.0
• Debian Linux: 9.0, 10.0
• Fedoraproject Fedora: 31, 32
• Go: before 1.13.13; from 1.14.0 before 1.14.5 — fixed in 1.13.13, 1.14.5
• openSUSE Leap: 15.1, 15.2

How to fix

Upgrade to a fixed version: Cloud Foundry cf-deployment 13.7.0; Cloudfoundry Routing-Release 0.203.0; Go 1.13.13, 1.14.5. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00077.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00082.html
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00029.html
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00030.html
• https://groups.google.com/forum/#%21topic/golang-announce/XZNfaiwgt2w
• https://groups.google.com/forum/#%21topic/golang-announce/f2c5bqrGH_g
• https://lists.debian.org/debian-lts-announce/2020/11/msg00037.html
• https://lists.debian.org/debian-lts-announce/2020/11/msg00038.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OCR6LAKCVKL55KJQPPBBWVQGOP7RL2RW/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WIRVUHD7TJIT7JJ33FKHIVTHPYABYPHR/
• https://security.netapp.com/advisory/ntap-20200731-0005/
• https://www.cloudfoundry.org/blog/cve-2020-15586/

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