Vulnerability-Lookup

GHSA-JPJM-C3R5-Q96R

Vulnerability from github – Published: 2026-07-21 21:32 – Updated: 2026-07-21 21:32

Details

A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.

{
  "affected": [],
  "aliases": [
    "CVE-2026-56852"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-21T20:17:02Z",
    "severity": null
  },
  "details": "A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.",
  "id": "GHSA-jpjm-c3r5-q96r",
  "modified": "2026-07-21T21:32:40Z",
  "published": "2026-07-21T21:32:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56852"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/cl/794100"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/issue/80142"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2026-5970"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-56852 (GCVE-0-2026-56852)

Vulnerability from cvelistv5 – Published: 2026-07-21 19:18 – Updated: 2026-07-21 19:18

Title

Infinite loop on invalid input in golang.org/x/text

Summary

A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.

Severity

No CVSS data available.

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

References

3 references

URL	Tags
https://go.dev/issue/80142
https://go.dev/cl/794100
https://pkg.go.dev/vuln/GO-2026-5970

Impacted products

1 product

Vendor	Product	Version
golang.org/x/text	golang.org/x/text/unicode/norm	Affected: 0 , < 0.39.0 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "golang.org/x/text/unicode/norm",
          "product": "golang.org/x/text/unicode/norm",
          "programRoutines": [
            {
              "name": "nextComposed"
            },
            {
              "name": "Form.Append"
            },
            {
              "name": "Form.AppendString"
            },
            {
              "name": "Form.Bytes"
            },
            {
              "name": "Form.FirstBoundary"
            },
            {
              "name": "Form.FirstBoundaryInString"
            },
            {
              "name": "Form.IsNormal"
            },
            {
              "name": "Form.IsNormalString"
            },
            {
              "name": "Form.LastBoundary"
            },
            {
              "name": "Form.NextBoundary"
            },
            {
              "name": "Form.NextBoundaryInString"
            },
            {
              "name": "Form.Properties"
            },
            {
              "name": "Form.PropertiesString"
            },
            {
              "name": "Form.QuickSpan"
            },
            {
              "name": "Form.QuickSpanString"
            },
            {
              "name": "Form.Span"
            },
            {
              "name": "Form.SpanString"
            },
            {
              "name": "Form.String"
            },
            {
              "name": "Form.Transform"
            },
            {
              "name": "Iter.Init"
            },
            {
              "name": "Iter.InitString"
            },
            {
              "name": "Iter.Next"
            },
            {
              "name": "Iter.Seek"
            },
            {
              "name": "normReader.Read"
            },
            {
              "name": "normWriter.Write"
            }
          ],
          "vendor": "golang.org/x/text",
          "versions": [
            {
              "lessThan": "0.39.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-835: Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-21T19:18:59.951Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/issue/80142"
        },
        {
          "url": "https://go.dev/cl/794100"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-5970"
        }
      ],
      "title": "Infinite loop on invalid input in golang.org/x/text"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-56852",
    "datePublished": "2026-07-21T19:18:59.951Z",
    "dateReserved": "2026-06-23T15:10:49.352Z",
    "dateUpdated": "2026-07-21T19:18:59.951Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-JPJM-C3R5-Q96R

CVE-2026-56852 (GCVE-0-2026-56852)

Tags

Sightings

Nomenclature