{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8784", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-05-17T09:59:14.863Z", "datePublished": "2026-05-18T02:30:13.275Z", "dateUpdated": "2026-05-18T02:30:13.275Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-05-18T02:30:13.275Z"}, "title": "npitre cramfs-tools cramfsck.c change_file_status symlink", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-61", "lang": "en", "description": "Symlink Following"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-59", "lang": "en", "description": "Link Following"}]}], "affected": [{"vendor": "npitre", "product": "cramfs-tools", "versions": [{"version": "2.0", "status": "affected"}, {"version": "2.1", "status": "affected"}, {"version": "2.2", "status": "affected"}], "cpes": ["cpe:2.3:a:npitre:cramfs-tools:*:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was detected in npitre cramfs-tools up to 2.2. Affected is the function change_file_status of the file cramfsck.c. Performing a manipulation results in symlink following. The attack requires a local approach. The exploit is now public and may be used. The patch is named b4a3a695c9873f824907bd15659f2a6ac7667b4f. It is recommended to apply a patch to fix this issue."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 4.6, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 4.2, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 4.2, "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 4, "vectorString": "AV:L/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:OF/RC:C"}}], "timeline": [{"time": "2026-05-17T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-05-17T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-05-17T12:04:24.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "nich0las (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/364408", "name": "VDB-364408 | npitre cramfs-tools cramfsck.c change_file_status symlink", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/364408/cti", "name": "VDB-364408 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/811897", "name": "Submit #811897 | GNU cramfs-tools below v2.2 Symlink Following", "tags": ["third-party-advisory"]}, {"url": "https://github.com/npitre/cramfs-tools/issues/13", "tags": ["exploit", "issue-tracking"]}, {"url": "https://github.com/npitre/cramfs-tools/issues/13#issuecomment-4306102583", "tags": ["issue-tracking"]}, {"url": "https://github.com/npitre/cramfs-tools/commit/b4a3a695c9873f824907bd15659f2a6ac7667b4f", "tags": ["patch"]}, {"url": "https://github.com/npitre/cramfs-tools/", "tags": ["product"]}], "tags": ["x_open-source"]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability was detected in npitre cramfs-tools up to 2.2. Affected is the function change_file_status of the file cramfsck.c. Performing a manipulation results in symlink following. The attack requires a local approach. The exploit is now public and may be used. The patch is named b4a3a695c9873f824907bd15659f2a6ac7667b4f. It is recommended to apply a patch to fix this issue."}], "id": "CVE-2026-8784", "lastModified": "2026-05-18T04:16:34.247", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "MULTIPLE", "availabilityImpact": "PARTIAL", "baseScore": 4.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:M/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 2.5, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 1.8, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2026-05-18T04:16:34.247", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/npitre/cramfs-tools/"}, {"source": "cna@vuldb.com", "url": "https://github.com/npitre/cramfs-tools/commit/b4a3a695c9873f824907bd15659f2a6ac7667b4f"}, {"source": "cna@vuldb.com", "url": "https://github.com/npitre/cramfs-tools/issues/13"}, {"source": "cna@vuldb.com", "url": "https://github.com/npitre/cramfs-tools/issues/13#issuecomment-4306102583"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/811897"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/364408"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/364408/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}, {"lang": "en", "value": "CWE-61"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "2.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "2.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "2.2"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "cramfs-tools", "source": "cna", "vendor": "npitre"}, "product": "cramfs-tools", "vendor": "npitre"}], "created": "2026-05-18T05:00:12.403148+00:00", "updated": "2026-05-18T05:00:13.088657+00:00", "vendors": ["npitre", "npitre$PRODUCT$cramfs-tools"]}