Vulnerability-Lookup

OESA-2026-1835 (CVE-2026-33750)

Vulnerability from osv_openeuler – Published: 2026-04-11 11:10 – Updated: 2026-08-06 11:10 – Source website

Summary

nodejs-brace-expansion security update

Details

Brace expansion as known from sh/bash

Security Fix(es):

The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13, a brace pattern with a zero step value (e.g., {1..2..0}) causes the sequence generation loop to run indefinitely, making the process hang for seconds and allocate heaps of memory. Versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13 fix the issue. As a workaround, sanitize strings passed to expand() to ensure a step value of 0 is not used.(CVE-2026-33750)

Severity

6.5 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-33750	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "noarch": [
          "nodejs-brace-expansion-1.1.11-3.oe2003sp4.noarch.rpm"
        ],
        "src": [
          "nodejs-brace-expansion-1.1.11-3.oe2003sp4.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "nodejs-brace-expansion",
        "purl": "pkg:rpm/openEuler/nodejs-brace-expansion\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.11-3.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "nodejs-brace-expansion-1.1.11-3.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "nodejs-brace-expansion-1.1.11-3.oe2203sp4.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "nodejs-brace-expansion",
        "purl": "pkg:rpm/openEuler/nodejs-brace-expansion\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.11-3.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "nodejs-brace-expansion-1.1.11-5.oe2403.noarch.rpm",
          "nodejs-brace-expansion-1.1.11-5.oe2403sp1.noarch.rpm",
          "nodejs-brace-expansion-1.1.11-5.oe2403sp2.noarch.rpm",
          "nodejs-brace-expansion-1.1.11-5.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "nodejs-brace-expansion-1.1.11-5.oe2403.src.rpm",
          "nodejs-brace-expansion-1.1.11-5.oe2403sp1.src.rpm",
          "nodejs-brace-expansion-1.1.11-5.oe2403sp2.src.rpm",
          "nodejs-brace-expansion-1.1.11-5.oe2403sp3.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS",
        "name": "nodejs-brace-expansion",
        "purl": "pkg:rpm/openEuler/nodejs-brace-expansion\u0026distro=openEuler-24.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.11-5.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "nodejs-brace-expansion-1.1.11-5.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "nodejs-brace-expansion-1.1.11-5.oe2403sp1.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "nodejs-brace-expansion",
        "purl": "pkg:rpm/openEuler/nodejs-brace-expansion\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.11-5.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "nodejs-brace-expansion-1.1.11-5.oe2403sp2.noarch.rpm"
        ],
        "src": [
          "nodejs-brace-expansion-1.1.11-5.oe2403sp2.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP2",
        "name": "nodejs-brace-expansion",
        "purl": "pkg:rpm/openEuler/nodejs-brace-expansion\u0026distro=openEuler-24.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.11-5.oe2403sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "noarch": [
          "nodejs-brace-expansion-1.1.11-5.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "nodejs-brace-expansion-1.1.11-5.oe2403sp3.src.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "nodejs-brace-expansion",
        "purl": "pkg:rpm/openEuler/nodejs-brace-expansion\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.11-5.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Brace expansion as known from sh/bash\r\n\r\nSecurity Fix(es):\n\nThe brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13, a brace pattern with a zero step value (e.g., `{1..2..0}`) causes the sequence generation loop to run indefinitely, making the process hang for seconds and allocate heaps of memory. Versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13 fix the issue. As a workaround, sanitize strings passed to `expand()` to ensure a step value of `0` is not used.(CVE-2026-33750)",
  "id": "OESA-2026-1835",
  "modified": "2026-08-06T11:10:51Z",
  "published": "2026-04-11T11:10:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1835"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33750"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "nodejs-brace-expansion security update",
  "upstream": [
    "CVE-2026-33750"
  ]
}

CVE-2026-33750 (GCVE-0-2026-33750)

Vulnerability from cvelistv5 – Published: 2026-03-27 14:04 – Updated: 2026-03-27 14:48

Title

brace-expansion: Zero-step sequence causes process hang and memory exhaustion

Summary

The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13, a brace pattern with a zero step value (e.g., `{1..2..0}`) causes the sequence generation loop to run indefinitely, making the process hang for seconds and allocate heaps of memory. Versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13 fix the issue. As a workaround, sanitize strings passed to `expand()` to ensure a step value of `0` is not used.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-27 14:47 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M mitre root Scorecard

References

10 references

URL	Tags
https://github.com/juliangruber/brace-expansion/s…	x_refsource_CONFIRM
https://github.com/juliangruber/brace-expansion/i…	x_refsource_MISC
https://github.com/juliangruber/brace-expansion/pull/95	x_refsource_MISC
https://github.com/juliangruber/brace-expansion/pull/96	x_refsource_MISC
https://github.com/juliangruber/brace-expansion/pull/97	x_refsource_MISC
https://github.com/juliangruber/brace-expansion/c…	x_refsource_MISC
https://github.com/juliangruber/brace-expansion/c…	x_refsource_MISC
https://github.com/juliangruber/brace-expansion/c…	x_refsource_MISC
https://github.com/juliangruber/brace-expansion/b…	x_refsource_MISC
https://github.com/juliangruber/brace-expansion/b…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
juliangruber	brace-expansion	Affected: >= 4.0.0, < 5.0.5 Affected: >= 3.0.0, < 3.0.2 Affected: >= 2.0.0, < 2.0.3 Affected: < 1.1.13

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-33750",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-27T14:47:58.490818Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-27T14:48:06.779Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "brace-expansion",
          "vendor": "juliangruber",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 4.0.0, \u003c 5.0.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.0.0, \u003c 3.0.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.0.0, \u003c 2.0.3"
            },
            {
              "status": "affected",
              "version": "\u003c 1.1.13"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13, a brace pattern with a zero step value (e.g., `{1..2..0}`) causes the sequence generation loop to run indefinitely, making the process hang for seconds and allocate heaps of memory. Versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13 fix the issue. As a workaround, sanitize strings passed to `expand()` to ensure a step value of `0` is not used."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-27T14:04:52.297Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-f886-m6hf-6m8v",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-f886-m6hf-6m8v"
        },
        {
          "name": "https://github.com/juliangruber/brace-expansion/issues/98",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/juliangruber/brace-expansion/issues/98"
        },
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          "name": "https://github.com/juliangruber/brace-expansion/pull/97",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/juliangruber/brace-expansion/pull/97"
        },
        {
          "name": "https://github.com/juliangruber/brace-expansion/commit/311ac0d54994158c0a384e286a7d6cbb17ee8ed5",
          "tags": [
            "x_refsource_MISC"
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        },
        {
          "name": "https://github.com/juliangruber/brace-expansion/commit/7fd684f89fdde3549563d0a6522226a9189472a2",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/juliangruber/brace-expansion/commit/7fd684f89fdde3549563d0a6522226a9189472a2"
        },
        {
          "name": "https://github.com/juliangruber/brace-expansion/commit/b9cacd9e55e7a1fa588fe4b7bb1159d52f1d902a",
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/juliangruber/brace-expansion/blob/daa71bcb4a30a2df9bcb7f7b8daaf2ab30e5794a/src/index.ts#L107-L113"
        },
        {
          "name": "https://github.com/juliangruber/brace-expansion/blob/daa71bcb4a30a2df9bcb7f7b8daaf2ab30e5794a/src/index.ts#L184",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/juliangruber/brace-expansion/blob/daa71bcb4a30a2df9bcb7f7b8daaf2ab30e5794a/src/index.ts#L184"
        }
      ],
      "source": {
        "advisory": "GHSA-f886-m6hf-6m8v",
        "discovery": "UNKNOWN"
      },
      "title": "brace-expansion: Zero-step sequence causes process hang and memory exhaustion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-33750",
    "datePublished": "2026-03-27T14:04:52.297Z",
    "dateReserved": "2026-03-23T18:30:14.124Z",
    "dateUpdated": "2026-03-27T14:48:06.779Z",
    "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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

OESA-2026-1835 (CVE-2026-33750)

CVE-2026-33750 (GCVE-0-2026-33750)

Tags

Sightings

Nomenclature

Related by attack behaviour