CVE-2026-54706 (GCVE-0-2026-54706)

Vulnerability from cvelistv5 – Published: 2026-07-31 16:30 – Updated: 2026-07-31 19:00
VLAI
Title
OnionShare follows symlinks in shared directories, allowing unintended disclosure of local files
Summary
OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. Prior to 2.6.4, OnionShare CLI/Desktop follows symbolic links in cli/onionshare_cli/web/send_base_mode.py through SendBaseModeWeb.set_file_info() and stream_individual_file(), allowing remote recipients of Share or Website mode to read local files outside the selected directory. This issue is fixed in version 2.6.4.
Severity
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
Impacted products
Vendor Product Version
onionshare onionshare Affected: < 2.6.4
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-54706",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-31T18:54:58.096662Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-31T19:00:44.128Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/onionshare/onionshare/security/advisories/GHSA-22p9-r2f5-22mf"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "onionshare",
          "vendor": "onionshare",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.6.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. Prior to 2.6.4, OnionShare CLI/Desktop follows symbolic links in cli/onionshare_cli/web/send_base_mode.py through SendBaseModeWeb.set_file_info() and stream_individual_file(), allowing remote recipients of Share or Website mode to read local files outside the selected directory. This issue is fixed in version 2.6.4."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-59",
              "description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-31T16:30:58.062Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/onionshare/onionshare/security/advisories/GHSA-22p9-r2f5-22mf",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/onionshare/onionshare/security/advisories/GHSA-22p9-r2f5-22mf"
        },
        {
          "name": "https://github.com/onionshare/onionshare/commit/48f31cfac077fcc9c04c67c2a6dbf87d956f5eec",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/onionshare/onionshare/commit/48f31cfac077fcc9c04c67c2a6dbf87d956f5eec"
        },
        {
          "name": "https://github.com/onionshare/onionshare/releases/tag/v2.6.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/onionshare/onionshare/releases/tag/v2.6.4"
        }
      ],
      "source": {
        "advisory": "GHSA-22p9-r2f5-22mf",
        "discovery": "UNKNOWN"
      },
      "title": "OnionShare follows symlinks in shared directories, allowing unintended disclosure of local files"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54706",
    "datePublished": "2026-07-31T16:30:58.062Z",
    "dateReserved": "2026-06-15T22:58:06.563Z",
    "dateUpdated": "2026-07-31T19:00:44.128Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-54706",
      "date": "2026-08-04",
      "epss": "0.00243",
      "percentile": "0.15608"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-54706\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-07-31T17:16:33.723\",\"lastModified\":\"2026-07-31T19:17:10.430\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. Prior to 2.6.4, OnionShare CLI/Desktop follows symbolic links in cli/onionshare_cli/web/send_base_mode.py through SendBaseModeWeb.set_file_info() and stream_individual_file(), allowing remote recipients of Share or Website mode to read local files outside the selected directory. This issue is fixed in version 2.6.4.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"onionshare\",\"product\":\"onionshare\",\"versions\":[{\"version\":\"\u003c 2.6.4\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.2,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-07-31T18:54:58.096662Z\",\"id\":\"CVE-2026-54706\",\"options\":[{\"exploitation\":\"poc\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-59\"}]}],\"references\":[{\"url\":\"https://github.com/onionshare/onionshare/commit/48f31cfac077fcc9c04c67c2a6dbf87d956f5eec\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/onionshare/onionshare/releases/tag/v2.6.4\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/onionshare/onionshare/security/advisories/GHSA-22p9-r2f5-22mf\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/onionshare/onionshare/security/advisories/GHSA-22p9-r2f5-22mf\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\"}]}}",
    "redhat_vex": {
      "current_release_date": "2026-07-31T17:58:14+00:00",
      "cve": "CVE-2026-54706",
      "id": "CVE-2026-54706",
      "initial_release_date": "2026-07-31T16:30:58.062000+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "onionshare: symlink following in shared directories, allowing unintended disclosure of local files",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54706.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-01T00:06:08Z",
      "cve": "CVE-2026-54706",
      "id": "CVE-2026-54706",
      "initial_release_date": "2026-07-01T03:15:25Z",
      "product_status:recommended": "1",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-54706",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-54706.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-54706\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-07-31T18:54:58.096662Z\"}}}], \"references\": [{\"url\": \"https://github.com/onionshare/onionshare/security/advisories/GHSA-22p9-r2f5-22mf\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-07-31T18:55:10.461Z\"}}], \"cna\": {\"title\": \"OnionShare follows symlinks in shared directories, allowing unintended disclosure of local files\", \"source\": {\"advisory\": \"GHSA-22p9-r2f5-22mf\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"onionshare\", \"product\": \"onionshare\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 2.6.4\"}]}], \"references\": [{\"url\": \"https://github.com/onionshare/onionshare/security/advisories/GHSA-22p9-r2f5-22mf\", \"name\": \"https://github.com/onionshare/onionshare/security/advisories/GHSA-22p9-r2f5-22mf\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/onionshare/onionshare/commit/48f31cfac077fcc9c04c67c2a6dbf87d956f5eec\", \"name\": \"https://github.com/onionshare/onionshare/commit/48f31cfac077fcc9c04c67c2a6dbf87d956f5eec\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/onionshare/onionshare/releases/tag/v2.6.4\", \"name\": \"https://github.com/onionshare/onionshare/releases/tag/v2.6.4\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. Prior to 2.6.4, OnionShare CLI/Desktop follows symbolic links in cli/onionshare_cli/web/send_base_mode.py through SendBaseModeWeb.set_file_info() and stream_individual_file(), allowing remote recipients of Share or Website mode to read local files outside the selected directory. This issue is fixed in version 2.6.4.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-59\", \"description\": \"CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-07-31T16:30:58.062Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-54706\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-31T19:00:44.128Z\", \"dateReserved\": \"2026-06-15T22:58:06.563Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-07-31T16:30:58.062Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.