CVE-2026-63496 (GCVE-0-2026-63496)

Vulnerability from cvelistv5 – Published: 2026-11-09 20:55 – Updated: 2026-11-09 20:55
VLAI
Title
augment-vir: Shell Command Injection in `grep()` via Unsanitized `searchPattern`
Summary
augment-vir is a collection of helper functions. Prior to version 31.73.5, the grep() function exported by @augment-vir/node inserts caller-controlled search patterns directly into a double-quoted shell command string without sanitization (grep.ts:310). When the constructed command is passed to spawn() with shell: 'bash' (shell.ts:98-99), bash evaluates $() command substitution expressions embedded in the pattern, resulting in arbitrary OS command execution as the Node.js process user. Any downstream application that passes untrusted input to grep()'s pattern or patterns field is vulnerable to unauthenticated local (and potentially remote) code execution. This issue has been patched in version 31.73.5.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
electrovir augment-vir Affected: < 31.73.5
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "augment-vir",
          "vendor": "electrovir",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 31.73.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "augment-vir is a collection of helper functions. Prior to version 31.73.5, the grep() function exported by @augment-vir/node inserts caller-controlled search patterns directly into a double-quoted shell command string without sanitization (grep.ts:310). When the constructed command is passed to spawn() with shell: \u0027bash\u0027 (shell.ts:98-99), bash evaluates $() command substitution expressions embedded in the pattern, resulting in arbitrary OS command execution as the Node.js process user. Any downstream application that passes untrusted input to grep()\u0027s pattern or patterns field is vulnerable to unauthenticated local (and potentially remote) code execution. This issue has been patched in version 31.73.5."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-09T20:55:33.876Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/electrovir/augment-vir/security/advisories/GHSA-xvcc-vqjv-phqh",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/electrovir/augment-vir/security/advisories/GHSA-xvcc-vqjv-phqh"
        },
        {
          "name": "https://github.com/electrovir/augment-vir/commit/9e1a3592903a56e500959be72276ede1708c3437",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electrovir/augment-vir/commit/9e1a3592903a56e500959be72276ede1708c3437"
        },
        {
          "name": "https://github.com/electrovir/augment-vir/releases/tag/v31.73.5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electrovir/augment-vir/releases/tag/v31.73.5"
        }
      ],
      "source": {
        "advisory": "GHSA-xvcc-vqjv-phqh",
        "discovery": "UNKNOWN"
      },
      "title": "augment-vir: Shell Command Injection in `grep()` via Unsanitized `searchPattern`"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-63496",
    "datePublished": "2026-11-09T20:55:33.876Z",
    "dateReserved": "2026-07-16T21:49:52.069Z",
    "dateUpdated": "2026-11-09T20:55:33.876Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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