{"id":"CVE-2026-8784","aliases":["EUVD-2026-30728","GHSA-qv27-xjwp-hw6f"],"status":"published","title":"npitre cramfs-tools cramfsck.c change_file_status symlink","description":"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.","severity":{"version":"4.0","score":4.6,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00157,"percentile":0.04899,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-59","CWE-61"],"published":"2026-05-18T02:30:13Z","modified":"2026-10-28T11:19:08Z","products":[{"vendor":"npitre","product":"cramfs-tools"}],"references":[{"url":"https://vuldb.com/vuln/364408","tags":["vdb-entry","technical-description","advisory"]},{"url":"https://vuldb.com/vuln/364408/cti","tags":["signature","permissions-required","report"]},{"url":"https://vuldb.com/submit/811897","tags":["third-party-advisory","advisory"]},{"url":"https://github.com/npitre/cramfs-tools/issues/13","tags":["exploit","issue-tracking","report"]},{"url":"https://github.com/npitre/cramfs-tools/issues/13#issuecomment-4306102583","tags":["issue-tracking","report"]},{"url":"https://github.com/npitre/cramfs-tools/commit/b4a3a695c9873f824907bd15659f2a6ac7667b4f","tags":["patch","fix"]},{"url":"https://github.com/npitre/cramfs-tools/","tags":["product","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8784","tags":["advisory"]},{"url":"https://github.com/npitre/cramfs-tools"},{"url":"https://github.com/advisories/GHSA-qv27-xjwp-hw6f"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8784.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-8784","title":"npitre cramfs-tools cramfsck.c change_file_status symlink","description":"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.","status":"published","published":"2026-05-18T02:30:13.275Z","modified":"2026-05-18T12:24:18.988Z","cvss":[{"version":"4.0","score":4.6,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.1","score":4.2,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.0","score":4.2,"vector":"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","level":"medium","assessor":"cna"},{"version":"2.0","score":4,"vector":"AV:L/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:OF/RC:C","assessor":"cna"}],"cwes":["CWE-61","CWE-59"],"updated_at":"2026-11-02T13:48:13.398044Z"}],"euvd":[{"id":"EUVD-2026-30728","description":"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.","status":"published","published":"2026-05-18T02:30:13Z","modified":"2026-05-18T12:24:18Z","cvss":[{"version":"4.0","score":4.6,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T18:21:16.642345Z"}],"ghsa":[{"id":"GHSA-qv27-xjwp-hw6f","title":"A vulnerability was detected in npitre cramfs-tools up to 2.2. Affected is the function...","description":"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.","status":"published","published":"2026-05-18T06:31:18Z","modified":"2026-05-18T06:31:18Z","cvss":[{"version":"4.0","score":1.8,"vector":"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","level":"low"},{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T15:08:11.468783Z"}],"nvd":[{"id":"CVE-2026-8784","description":"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.","status":"published","published":"2026-05-18T04:16:34.247Z","modified":"2026-10-25T23:10:00.167Z","cvss":[{"version":"4.0","score":1.8,"vector":"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","level":"low","assessor":"secondary"},{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"2.0","score":4,"vector":"AV:L/AC:L/Au:M/C:P/I:P/A:P","level":"medium","assessor":"secondary"}],"cwes":["CWE-59","CWE-61"],"updated_at":"2026-11-02T14:12:19.39893Z"}],"osv":[{"id":"CVE-2026-8784","title":"npitre cramfs-tools cramfsck.c change_file_status symlink","description":"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.","status":"published","published":"2026-05-18T02:30:13.275Z","modified":"2026-10-28T11:19:08.187910989Z","cvss":[{"version":"4.0","score":1.8,"vector":"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","level":"low"}],"cwes":["CWE-59","CWE-61"],"updated_at":"2026-11-02T15:45:19.210277Z"}]}}