CVE-2026-102278 (GCVE-0-2026-102278)

Vulnerability from cvelistv5 – Published: 2026-09-28 20:57 – Updated: 2026-09-28 20:57
VLAI
Title
brace-expansion: DoS via uncontrolled recursion on nested brace groups causing stack exhaustion
Summary
The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.20, 2.1.6, 3.0.8, and 5.0.11, deeply nested brace groups cause expand_() to recurse once per nesting level at comma-member and single-set expansion sites, exhausting the native stack before output limits can apply and potentially terminating the Node.js process. expand_ performs uncontrolled recursion for nested brace alternatives and single-part sets. deeply nested brace groups supplied as an untrusted pattern. expand_ is affected. expand is affected. Comma members is affected. Single set is affected. native stack exhaustion during nested sub-expansion. process-terminating denial of service. This issue is fixed in versions 1.1.20, 2.1.6, 3.0.8, and 5.0.11.
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-674 - Uncontrolled Recursion
Impacted products
Vendor Product Version CPE status
juliangruber brace-expansion Affected: >= 4.0.0, < 5.0.11
Affected: >= 3.0.0, < 3.0.8
Affected: >= 2.0.0, < 2.1.6
Affected: < 1.1.20
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "brace-expansion",
          "vendor": "juliangruber",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 4.0.0, \u003c 5.0.11"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.0.0, \u003c 3.0.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 2.0.0, \u003c 2.1.6"
            },
            {
              "status": "affected",
              "version": "\u003c 1.1.20"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.20, 2.1.6, 3.0.8, and 5.0.11, deeply nested brace groups cause expand_() to recurse once per nesting level at comma-member and single-set expansion sites, exhausting the native stack before output limits can apply and potentially terminating the Node.js process. expand_ performs uncontrolled recursion for nested brace alternatives and single-part sets. deeply nested brace groups supplied as an untrusted pattern. expand_ is affected. expand is affected. Comma members is affected. Single set is affected. native stack exhaustion during nested sub-expansion. process-terminating denial of service. This issue is fixed in versions 1.1.20, 2.1.6, 3.0.8, and 5.0.11."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-674",
              "description": "CWE-674: Uncontrolled Recursion",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-28T20:57:09.850Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-qhr7-859c-m2p7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-qhr7-859c-m2p7"
        },
        {
          "name": "https://github.com/juliangruber/brace-expansion/commit/1efee7c397c191da6287a78ec19512476a966a7b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/juliangruber/brace-expansion/commit/1efee7c397c191da6287a78ec19512476a966a7b"
        },
        {
          "name": "https://github.com/juliangruber/brace-expansion/commit/935d78f32f335b2ff76578e5c5e877d31ae9888c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/juliangruber/brace-expansion/commit/935d78f32f335b2ff76578e5c5e877d31ae9888c"
        },
        {
          "name": "https://github.com/juliangruber/brace-expansion/commit/de84f144e9816f30e25fc8179e2e1249ab6df0db",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/juliangruber/brace-expansion/commit/de84f144e9816f30e25fc8179e2e1249ab6df0db"
        }
      ],
      "source": {
        "advisory": "GHSA-qhr7-859c-m2p7",
        "discovery": "UNKNOWN"
      },
      "title": "brace-expansion: DoS via uncontrolled recursion on nested brace groups causing stack exhaustion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-102278",
    "datePublished": "2026-09-28T20:57:09.850Z",
    "dateReserved": "2026-09-28T20:11:16.659Z",
    "dateUpdated": "2026-09-28T20:57:09.850Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-102278",
      "date": "2026-09-30",
      "epss": "0.0035",
      "percentile": "0.2625"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "brace-expansion",
                "vendor": "juliangruber",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 4.0.0, \u003c 5.0.11"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 3.0.0, \u003c 3.0.8"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 2.0.0, \u003c 2.1.6"
                  },
                  {
                    "status": "affected",
                    "version": "\u003c 1.1.20"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.20, 2.1.6, 3.0.8, and 5.0.11, deeply nested brace groups cause expand_() to recurse once per nesting level at comma-member and single-set expansion sites, exhausting the native stack before output limits can apply and potentially terminating the Node.js process. expand_ performs uncontrolled recursion for nested brace alternatives and single-part sets. deeply nested brace groups supplied as an untrusted pattern. expand_ is affected. expand is affected. Comma members is affected. Single set is affected. native stack exhaustion during nested sub-expansion. process-terminating denial of service. This issue is fixed in versions 1.1.20, 2.1.6, 3.0.8, and 5.0.11."
          }
        ],
        "id": "CVE-2026-102278",
        "lastModified": "2026-09-30T19:57:08.043",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-09-28T21:17:16.517",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/juliangruber/brace-expansion/commit/1efee7c397c191da6287a78ec19512476a966a7b"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/juliangruber/brace-expansion/commit/935d78f32f335b2ff76578e5c5e877d31ae9888c"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/juliangruber/brace-expansion/commit/de84f144e9816f30e25fc8179e2e1249ab6df0db"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-qhr7-859c-m2p7"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-400"
              },
              {
                "lang": "en",
                "value": "CWE-674"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-09-30T16:08:54+00:00",
      "cve": "CVE-2026-102278",
      "id": "CVE-2026-102278",
      "initial_release_date": "2026-09-28T20:57:09.850000+00:00",
      "product_status:fixed": "57",
      "product_status:known_affected": "5",
      "product_status:known_not_affected": "9",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "brace-expansion: brace-expansion: Denial of Service via uncontrolled recursion in nested brace patterns",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102278.json",
      "version": "3"
    }
  }
}



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