SUSE-SU-2026:23052-1

Vulnerability from csaf_suse - Published: 2026-08-04 10:47 - Updated: 2026-09-20 18:40
Summary
Security update for helm
Severity
Important
Notes
Title of the patch: Security update for helm
Description of the patch: This update for helm fixes the following issues Update to version 3.21.3. - CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266598). - CVE-2026-48978: oras.land/oras-go/v2/registry/remote/auth: missing validation in `auth.Client()` allows a malicious registry to hijack Bearer token realms to exfiltrate credentials and refresh tokens (bsc#1270127). - CVE-2026-56852: golang.org/x/text/unicode/norm: handling of input containing truncated/invalid UTF-8 input can lead to infinite loop (bsc#1271997). Changes for helm: - Update `x/text` to 0.40.0. - Update `x/net` to 0.57.0. - Update to version 3.21.3: * Apply suggestions from code review 1ad6e68 (Benoit Tigeot). * fix: drop `containerd` v1 dep to resolve govulncheck CVEs 037733e (Benoit Tigeot). * chore(deps): bump `github.com/containerd/containerd` from 1.7.32 to 1.7.33 d3e178b (dependabot[bot]).
Patchnames: SUSE-SLE-Micro-6.0-830
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2026-39821
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:helm-bash-completion-0:3.21.3-1.1.noarch —
Vendor Fix
Threats
Impact important
CVE-2026-48978
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Affected products
Recommended 4 products, the same list as for CVE-2026-39821
Threats
Impact moderate
CVE-2026-56852
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Recommended 4 products, the same list as for CVE-2026-39821
Threats
Impact moderate
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Security update for helm",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for helm fixes the following issues\n\nUpdate to version 3.21.3.\n\n- CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation\n  bypass and privilege escalation (bsc#1266598).\n- CVE-2026-48978: oras.land/oras-go/v2/registry/remote/auth: missing validation in `auth.Client()` allows a malicious\n  registry to hijack Bearer token realms to exfiltrate credentials and refresh tokens (bsc#1270127).\n- CVE-2026-56852: golang.org/x/text/unicode/norm: handling of input containing truncated/invalid UTF-8 input can\n  lead to infinite loop (bsc#1271997).\n\nChanges for helm:\n\n- Update `x/text` to 0.40.0.\n- Update `x/net` to 0.57.0.\n- Update to version 3.21.3:\n  * Apply suggestions from code review 1ad6e68 (Benoit Tigeot).\n  * fix: drop `containerd` v1 dep to resolve govulncheck CVEs 037733e (Benoit Tigeot).\n  * chore(deps): bump `github.com/containerd/containerd` from 1.7.32 to 1.7.33 d3e178b (dependabot[bot]).\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-SLE-Micro-6.0-830",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://www.suse.com/support/security/contact/",
      "name": "SUSE Product Security Team",
      "namespace": "https://www.suse.com/"
    },
    "references": [
      {
        "category": "external",
        "summary": "SUSE ratings",
        "url": "https://www.suse.com/support/security/rating/"
      },
      {
        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_23052-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-SU-2026:23052-1",
        "url": "https://www.suse.com/support/update/announcement/2026/suse-su-202623052-1/"
      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-SU-2026:23052-1",
        "url": "https://lists.suse.com/pipermail/sle-updates/2026-August/049233.html"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1266598",
        "url": "https://bugzilla.suse.com/1266598"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1270127",
        "url": "https://bugzilla.suse.com/1270127"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1271997",
        "url": "https://bugzilla.suse.com/1271997"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2026-39821 page",
        "url": "https://www.suse.com/security/cve/CVE-2026-39821/"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2026-48978 page",
        "url": "https://www.suse.com/security/cve/CVE-2026-48978/"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2026-56852 page",
        "url": "https://www.suse.com/security/cve/CVE-2026-56852/"
      }
    ],
    "title": "Security update for helm",
    "tracking": {
      "current_release_date": "2026-09-20T18:40:41Z",
      "generator": {
        "date": "2026-08-04T10:47:16Z",
        "engine": {
          "name": "cve-database.git:bin/generate-csaf.pl",
          "version": "1"
        }
      },
      "id": "SUSE-SU-2026:23052-1",
      "initial_release_date": "2026-08-04T10:47:16Z",
      "revision_history": [
        {
          "date": "2026-08-04T10:47:16Z",
          "number": "1",
          "summary": "Current version"
        },
        {
          "date": "2026-09-16T09:03:24Z",
          "number": "2",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-16T19:22:20Z",
          "number": "3",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-16T20:10:26Z",
          "number": "4",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-17T16:09:43Z",
          "number": "5",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-19T15:41:40Z",
          "number": "6",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-20T18:40:41Z",
          "number": "7",
          "summary": "unknown changes"
        }
      ],
      "status": "final",
      "version": "7"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "helm-0:3.21.3-1.1.aarch64",
                "product": {
                  "name": "helm-0:3.21.3-1.1.aarch64",
                  "product_id": "helm-0:3.21.3-1.1.aarch64",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:helm:helm:3.21.3:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/helm@3.21.3-1.1?arch=aarch64\u0026upstream=helm-0:3.21.3-1.1.src.rpm"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "helm-bash-completion-0:3.21.3-1.1.noarch",
                "product": {
                  "name": "helm-bash-completion-0:3.21.3-1.1.noarch",
                  "product_id": "helm-bash-completion-0:3.21.3-1.1.noarch",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:helm:helm:3.21.3:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/helm-bash-completion@3.21.3-1.1?arch=noarch\u0026upstream=helm-0:3.21.3-1.1.src.rpm"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "helm-0:3.21.3-1.1.s390x",
                "product": {
                  "name": "helm-0:3.21.3-1.1.s390x",
                  "product_id": "helm-0:3.21.3-1.1.s390x",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:helm:helm:3.21.3:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/helm@3.21.3-1.1?arch=s390x\u0026upstream=helm-0:3.21.3-1.1.src.rpm"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "s390x"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "helm-0:3.21.3-1.1.x86_64",
                "product": {
                  "name": "helm-0:3.21.3-1.1.x86_64",
                  "product_id": "helm-0:3.21.3-1.1.x86_64",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:helm:helm:3.21.3:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/helm@3.21.3-1.1?arch=x86_64\u0026upstream=helm-0:3.21.3-1.1.src.rpm"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "SUSE Linux Micro 6.0",
                "product": {
                  "name": "SUSE Linux Micro 6.0",
                  "product_id": "SUSE Linux Micro 6.0",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:suse:sl-micro:6.0"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "SUSE Linux Enterprise"
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "helm-0:3.21.3-1.1.aarch64 as component of SUSE Linux Micro 6.0",
          "product_id": "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.aarch64"
        },
        "product_reference": "helm-0:3.21.3-1.1.aarch64",
        "relates_to_product_reference": "SUSE Linux Micro 6.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "helm-0:3.21.3-1.1.s390x as component of SUSE Linux Micro 6.0",
          "product_id": "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.s390x"
        },
        "product_reference": "helm-0:3.21.3-1.1.s390x",
        "relates_to_product_reference": "SUSE Linux Micro 6.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "helm-0:3.21.3-1.1.x86_64 as component of SUSE Linux Micro 6.0",
          "product_id": "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.x86_64"
        },
        "product_reference": "helm-0:3.21.3-1.1.x86_64",
        "relates_to_product_reference": "SUSE Linux Micro 6.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "helm-bash-completion-0:3.21.3-1.1.noarch as component of SUSE Linux Micro 6.0",
          "product_id": "SUSE Linux Micro 6.0:helm-bash-completion-0:3.21.3-1.1.noarch"
        },
        "product_reference": "helm-bash-completion-0:3.21.3-1.1.noarch",
        "relates_to_product_reference": "SUSE Linux Micro 6.0"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-39821",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-39821"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode(\"xn--example-.com\") incorrectly returns the name \"example.com\" rather than an error. This behavior can lead to privilege escalation in programs using the idna package. For example, a program which performs privilege checks on the ASCII hostname may reject \"example.com\" but permit \"xn--example-.com\". If that program subsequently converts the ASCII hostname to Unicode, it will inadvertently permits access to the Unicode name \"example.com\".",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.aarch64",
          "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.s390x",
          "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.x86_64",
          "SUSE Linux Micro 6.0:helm-bash-completion-0:3.21.3-1.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-39821",
          "url": "https://www.suse.com/security/cve/CVE-2026-39821"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1266474 for CVE-2026-39821",
          "url": "https://bugzilla.suse.com/1266474"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.aarch64",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.s390x",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.x86_64",
            "SUSE Linux Micro 6.0:helm-bash-completion-0:3.21.3-1.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.aarch64",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.s390x",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.x86_64",
            "SUSE Linux Micro 6.0:helm-bash-completion-0:3.21.3-1.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-08-04T10:47:16Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-39821"
    },
    {
      "cve": "CVE-2026-48978",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-48978"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "oras-go is a Go library for managing OCI artifacts. Prior to 2.6.1, auth.Client follows the realm URL from a registry\u0027s WWW-Authenticate: Bearer challenge without validating the scheme or host, allowing a malicious or compromised registry to cause SSRF to internal networks such as http://169.254.169.254/, http://10.0.0.x/, and http://127.0.0.1/, or to downgrade a registry contacted over https:// to an http:// token endpoint in registry/remote/auth/client.go through Client.Do(), Client.fetchBearerToken(), fetchDistributionToken, and fetchOAuth2Token. This issue is fixed in version 2.6.1.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.aarch64",
          "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.s390x",
          "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.x86_64",
          "SUSE Linux Micro 6.0:helm-bash-completion-0:3.21.3-1.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-48978",
          "url": "https://www.suse.com/security/cve/CVE-2026-48978"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1270126 for CVE-2026-48978",
          "url": "https://bugzilla.suse.com/1270126"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.aarch64",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.s390x",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.x86_64",
            "SUSE Linux Micro 6.0:helm-bash-completion-0:3.21.3-1.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.aarch64",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.s390x",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.x86_64",
            "SUSE Linux Micro 6.0:helm-bash-completion-0:3.21.3-1.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-08-04T10:47:16Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-48978"
    },
    {
      "cve": "CVE-2026-56852",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-56852"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.aarch64",
          "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.s390x",
          "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.x86_64",
          "SUSE Linux Micro 6.0:helm-bash-completion-0:3.21.3-1.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-56852",
          "url": "https://www.suse.com/security/cve/CVE-2026-56852"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1271661 for CVE-2026-56852",
          "url": "https://bugzilla.suse.com/1271661"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1280553 for CVE-2026-56852",
          "url": "https://bugzilla.suse.com/1280553"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.aarch64",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.s390x",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.x86_64",
            "SUSE Linux Micro 6.0:helm-bash-completion-0:3.21.3-1.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.aarch64",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.s390x",
            "SUSE Linux Micro 6.0:helm-0:3.21.3-1.1.x86_64",
            "SUSE Linux Micro 6.0:helm-bash-completion-0:3.21.3-1.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-08-04T10:47:16Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-56852"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.