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High

Security advisory

Type: advisorySources: OSVCVE: CVE-2020-28852

In x/text in Go before v0.3.5, a "slice bounds out of range" panic occurs in language.ParseAcceptLanguage while processing a BCP 47 tag. (x/text/language is supposed to be able to parse an HTTP Accept-Language header.)

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2020-28852
Confirmed fixed CVEs
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Updated in this feed
1 Nov 2026, 07:13 UTC · Revision 1

Source evidence

CVE-2020-28852

core-osv · Original source

Published 2 Jan 2021, 06:15 UTC

In x/text in Go before v0.3.5, a "slice bounds out of range" panic occurs in language.ParseAcceptLanguage while processing a BCP 47 tag. (x/text/language is supposed to be able to parse an HTTP Accept-Language header.)

osv:CVE-2020-28852
Complete source record
{
  "id": "f506f6b2e81a49b7fedb9e15041d05225c909969e41bd93cb1c2729e34d8fc15",
  "url": "https://osv.dev/vulnerability/CVE-2020-28852",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-28852",
    "summary": "In x/text in Go before v0.3.5, a \"slice bounds out of range\" panic occurs in language.ParseAcceptLanguage while processing a BCP 47 tag. (x/text/language is supposed to be able to parse an HTTP Accept-Language header.)",
    "evidence": "osv:CVE-2020-28852",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-28852",
      "aliases": [
        "CVE-2020-28852"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/golang/text",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "75a595aef632b07c6eeaaa805adb6f0f66e4130e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:golang:text:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.3.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.3.4",
            "v0.3.3",
            "v0.3.2",
            "v0.3.1",
            "v0.3.0",
            "v0.2.0",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28852.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:50.275154465Z",
      "provider": "osv",
      "references": [
        "https://security.netapp.com/advisory/ntap-20210212-0004/",
        "https://github.com/golang/go/issues/42536"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-28852",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 437203,
  "published_at": "2021-01-02T06:15:13.1+00:00"
}