Romeo is vulnerable to Archive Slip due to missing checks in sanitization

{
  "id": "91ba724f903db251ae11b0870c698f0bedd731d56e223d8f2514a7604eea199d",
  "url": "https://osv.dev/vulnerability/CVE-2026-32805",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Romeo is vulnerable to Archive Slip due to missing checks in sanitization",
    "summary": "Romeo gives the capability to reach high code coverage of Go ≥1.20 apps by helping to measure code coverage for functional and integration tests within GitHub Actions. Prior to version 0.2.2, the `sanitizeArchivePath` function in `webserver/api/v1/decoder.go` (lines 80-88) is vulnerable to a path traversal bypass due to a missing trailing path separator in the `strings.HasPrefix` check. A crafted tar archive can write files outside the intended destination directory. Version 0.2.2 fixes the issue.",
    "evidence": "osv:CVE-2026-32805",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-32805",
      "aliases": [
        "CVE-2026-32805",
        "GHSA-p799-g7vv-f279",
        "GO-2026-4719"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:L/SA:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ctfer-io/romeo",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "c2ebcfb9f305fd5f6ef68858de82507dbac10263"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.2.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c2ebcfb9f305fd5f6ef68858de82507dbac10263"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "cpe": "cpe:2.3:a:ctfer-io:romeo:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.2.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "webserver/v0.2.1",
            "v0.2.1",
            "install/v0.2.1/deploy",
            "environment/v0.2.1/deploy",
            "webserver/v0.2.0",
            "v0.2.0",
            "install/v0.2.0",
            "environment/v0.2.0",
            "webserver/v0.1.9",
            "v0.1.9",
            "install/v0.1.9",
            "environment/v0.1.9",
            "webserver/v0.1.8",
            "v0.1.8",
            "install/v0.1.8",
            "environment/v0.1.8",
            "webserver/v0.1.7",
            "v0.1.7",
            "install/v0.1.7",
            "environment/v0.1.7",
            "webserver/v0.1.6",
            "v0.1.6",
            "install/v0.1.6",
            "environment/v0.1.6",
            "webserver/v0.1.5",
            "v0.1.5",
            "install/v0.1.5",
            "environment/v0.1.5",
            "webserver/v0.1.4",
            "v0.1.4",
            "install/v0.1.4",
            "environment/v0.1.4",
            "webserver/v0.1.3",
            "v0.1.3",
            "install/v0.1.3",
            "environment/v0.1.3",
            "webserver/v0.1.2",
            "v0.1.2",
            "install/v0.1.2",
            "environment/v0.1.2",
            "webserver/v0.1.1",
            "v0.1.1",
            "install/v0.1.1",
            "environment/v0.1.1",
            "webserver/v0.1.0",
            "v0.1.0",
            "install/v0.1.0",
            "environment/v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32805.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.960413966Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32805.json",
        "https://github.com/ctfer-io/romeo/security/advisories/GHSA-p799-g7vv-f279",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-32805",
        "https://github.com/ctfer-io/romeo/commit/c2ebcfb9f305fd5f6ef68858de82507dbac10263"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32805.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-32805",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 505230,
  "published_at": "2026-03-18T22:24:29.102+00:00"
}