Bash-it barbuk Theme 3.2.0 Terminal Escape Sequence Injection via pyproject.toml

{
  "id": "73b8f69ab5a78fb9b0738b7d1d631f2b403c682d99cc88526f1f1b3d33076971",
  "url": "https://osv.dev/vulnerability/CVE-2026-73036",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bash-it barbuk Theme 3.2.0 Terminal Escape Sequence Injection via pyproject.toml",
    "summary": "Bash-it 3.2.0 contains a terminal escape sequence injection vulnerability in the barbuk theme's Python virtualenv prompt segment that allows local attackers to inject arbitrary terminal control sequences by embedding escape sequences in the requires-python field of a pyproject.toml file. When a user navigates into a directory containing a maliciously crafted pyproject.toml, the unfiltered field value is read via awk and concatenated directly into PS1 through __prompt-command without stripping control characters, causing injected OSC or CSI sequences to be written to and interpreted by the terminal emulator on every prompt render.",
    "evidence": "osv:CVE-2026-73036",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-73036",
      "aliases": [
        "CVE-2026-73036"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bash-it/bash-it",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "fab8f57818f28bfc6f2a81f86a58981c4ea72e5a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.2.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "fab8f57818f28bfc6f2a81f86a58981c4ea72e5a"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.2.0",
            "v3.1.1",
            "v3.0.3",
            "v3.0.2",
            "v3.0.1",
            "v3.0.0",
            "v2.1.4",
            "v2.1.3",
            "v2.1.2",
            "v2.1.1",
            "v2.1.0",
            "v2.0.0",
            "v1.1.0",
            "v1.0.1",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73036.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.228439676Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73036.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-73036",
        "https://www.vulncheck.com/advisories/bash-it-barbuk-theme-terminal-escape-sequence-injection-via-pyproject-toml",
        "https://github.com/Bash-it/bash-it/issues/2396",
        "https://github.com/Bash-it/bash-it/commit/fab8f57818f28bfc6f2a81f86a58981c4ea72e5a",
        "https://github.com/Bash-it/bash-it",
        "https://github.com/Bash-it/bash-it/pull/2397"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-150"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73036.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-73036",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504813,
  "published_at": "2026-08-11T19:37:12.133+00:00"
}