{"id":"CVE-2025-59334","state":"PUBLISHED","title":"Linkr allows manifest tampering leading to arbitrary file injection","description":"Linkr is a lightweight file delivery system that downloads files from a webserver. Linkr versions through 2.0.0 do not verify the integrity or authenticity of .linkr manifest files before using their contents, allowing a tampered manifest to inject arbitrary file entries into a package distribution. An attacker can modify a generated .linkr manifest (for example by adding a new entry with a malicious URL) and when a user runs the extract command the client downloads the attacker-supplied file without verification. This enables arbitrary file injection and creates a potential path to remote code execution if a downloaded malicious binary or script is later executed. Version 2.0.1 adds a manifest integrity check that compares the checksum of the original author-created manifest to the one being extracted and aborts on mismatch, warning if no original manifest is hosted. Users should update to 2.0.1 or later. As a workaround prior to updating, use only trusted .linkr manifests, manually verify manifest integrity, and host manifests on trusted servers.","publishedAt":"2025-09-16T16:48:34.887Z","updatedAt":"2025-09-16T18:26:18.183Z","severity":{"score":9.7,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["mohammadzain2008 Linkr"],"affected":[{"vendor":"mohammadzain2008","product":"Linkr","versions":[{"version":"< 2.0.1","status":"affected"}]}],"references":["https://github.com/mohammadzain2008/Linkr/security/advisories/GHSA-6wph-mpv2-29xv","https://github.com/mohammadzain2008/Linkr/commit/182e5ddaa51972e144005b500c4bcebf2fd1a6c0"],"weaknesses":["CWE-347"],"ingestedAt":"2026-10-29T20:09:39.787Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/59xxx/CVE-2025-59334.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-59334","state":"PUBLISHED","datePublished":"2025-09-16T16:48:34.887Z","dateUpdated":"2025-09-16T18:26:18.183Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-09-12T12:36:24.635Z"},"containers":{"cna":{"title":"Linkr allows manifest tampering leading to arbitrary file injection","descriptions":[{"lang":"en","value":"Linkr is a lightweight file delivery system that downloads files from a webserver. Linkr versions through 2.0.0 do not verify the integrity or authenticity of .linkr manifest files before using their contents, allowing a tampered manifest to inject arbitrary file entries into a package distribution. An attacker can modify a generated .linkr manifest (for example by adding a new entry with a malicious URL) and when a user runs the extract command the client downloads the attacker-supplied file without verification. This enables arbitrary file injection and creates a potential path to remote code execution if a downloaded malicious binary or script is later executed. Version 2.0.1 adds a manifest integrity check that compares the checksum of the original author-created manifest to the one being extracted and aborts on mismatch, warning if no original manifest is hosted. Users should update to 2.0.1 or later. As a workaround prior to updating, use only trusted .linkr manifests, manually verify manifest integrity, and host manifests on trusted servers."}],"affected":[{"vendor":"mohammadzain2008","product":"Linkr","versions":[{"version":"< 2.0.1","status":"affected"}]}],"references":[{"url":"https://github.com/mohammadzain2008/Linkr/security/advisories/GHSA-6wph-mpv2-29xv","name":"https://github.com/mohammadzain2008/Linkr/security/advisories/GHSA-6wph-mpv2-29xv","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/mohammadzain2008/Linkr/commit/182e5ddaa51972e144005b500c4bcebf2fd1a6c0","name":"https://github.com/mohammadzain2008/Linkr/commit/182e5ddaa51972e144005b500c4bcebf2fd1a6c0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.7,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-347","lang":"en","description":"CWE-347: Improper Verification of Cryptographic Signature","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-09-16T16:48:34.887Z"},"source":{"advisory":"GHSA-6wph-mpv2-29xv","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/mohammadzain2008/Linkr/security/advisories/GHSA-6wph-mpv2-29xv","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-09-16T17:29:16.497619Z","id":"CVE-2025-59334","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-09-16T18:26:18.183Z"}}]}}}