Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-15586
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:22 UTC · Revision 1
Source evidence
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.
osv:CVE-2020-15586
Complete source record
{
"id": "01389c643962c13f6554effe37cce8cca51218eacd217509af97735b5ce1e101",
"url": "https://osv.dev/vulnerability/CVE-2020-15586",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-15586",
"summary": "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.",
"evidence": "osv:CVE-2020-15586",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-15586",
"aliases": [
"BIT-golang-2020-15586",
"CVE-2020-15586",
"GO-2021-0224"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
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"modified": "2026-10-24T10:31:06.738847491Z",
"provider": "osv",
"references": [
"https://groups.google.com/forum/#%21topic/golang-announce/XZNfaiwgt2w",
"https://groups.google.com/forum/#%21topic/golang-announce/f2c5bqrGH_g",
"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://lists.debian.org/debian-lts-announce/2020/11/msg00037.html",
"https://lists.debian.org/debian-lts-announce/2020/11/msg00038.html",
"https://security.netapp.com/advisory/ntap-20200731-0005/",
"https://www.cloudfoundry.org/blog/cve-2020-15586/",
"https://www.debian.org/security/2021/dsa-4848",
"https://www.oracle.com/security-alerts/cpuApr2021.html"
],
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"evidence": "/id"
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"security_relevant": true,
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},
"source_id": "core-osv",
"document_id": 441033,
"published_at": "2020-07-17T16:15:11.48+00:00"
}