{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-2016","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-02-05T19:35:28.683Z","datePublished":"2026-02-06T11:02:08.107Z","dateUpdated":"2026-02-23T09:24:15.968Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-02-23T09:24:15.968Z"},"title":"happyfish100 libfastcommon base64.c base64_decode stack-based overflow","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-121","lang":"en","description":"Stack-based Buffer Overflow"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-119","lang":"en","description":"Memory Corruption"}]}],"affected":[{"vendor":"happyfish100","product":"libfastcommon","versions":[{"version":"1.0.0","status":"affected"},{"version":"1.0.1","status":"affected"},{"version":"1.0.2","status":"affected"},{"version":"1.0.3","status":"affected"},{"version":"1.0.4","status":"affected"},{"version":"1.0.5","status":"affected"},{"version":"1.0.6","status":"affected"},{"version":"1.0.7","status":"affected"},{"version":"1.0.8","status":"affected"},{"version":"1.0.9","status":"affected"},{"version":"1.0.10","status":"affected"},{"version":"1.0.11","status":"affected"},{"version":"1.0.12","status":"affected"},{"version":"1.0.13","status":"affected"},{"version":"1.0.14","status":"affected"},{"version":"1.0.15","status":"affected"},{"version":"1.0.16","status":"affected"},{"version":"1.0.17","status":"affected"},{"version":"1.0.18","status":"affected"},{"version":"1.0.19","status":"affected"},{"version":"1.0.20","status":"affected"},{"version":"1.0.21","status":"affected"},{"version":"1.0.22","status":"affected"},{"version":"1.0.23","status":"affected"},{"version":"1.0.24","status":"affected"},{"version":"1.0.25","status":"affected"},{"version":"1.0.26","status":"affected"},{"version":"1.0.27","status":"affected"},{"version":"1.0.28","status":"affected"},{"version":"1.0.29","status":"affected"},{"version":"1.0.30","status":"affected"},{"version":"1.0.31","status":"affected"},{"version":"1.0.32","status":"affected"},{"version":"1.0.33","status":"affected"},{"version":"1.0.34","status":"affected"},{"version":"1.0.35","status":"affected"},{"version":"1.0.36","status":"affected"},{"version":"1.0.37","status":"affected"},{"version":"1.0.38","status":"affected"},{"version":"1.0.39","status":"affected"},{"version":"1.0.40","status":"affected"},{"version":"1.0.41","status":"affected"},{"version":"1.0.42","status":"affected"},{"version":"1.0.43","status":"affected"},{"version":"1.0.44","status":"affected"},{"version":"1.0.45","status":"affected"},{"version":"1.0.46","status":"affected"},{"version":"1.0.47","status":"affected"},{"version":"1.0.48","status":"affected"},{"version":"1.0.49","status":"affected"},{"version":"1.0.50","status":"affected"},{"version":"1.0.51","status":"affected"},{"version":"1.0.52","status":"affected"},{"version":"1.0.53","status":"affected"},{"version":"1.0.54","status":"affected"},{"version":"1.0.55","status":"affected"},{"version":"1.0.56","status":"affected"},{"version":"1.0.57","status":"affected"},{"version":"1.0.58","status":"affected"},{"version":"1.0.59","status":"affected"},{"version":"1.0.60","status":"affected"},{"version":"1.0.61","status":"affected"},{"version":"1.0.62","status":"affected"},{"version":"1.0.63","status":"affected"},{"version":"1.0.64","status":"affected"},{"version":"1.0.65","status":"affected"},{"version":"1.0.66","status":"affected"},{"version":"1.0.67","status":"affected"},{"version":"1.0.68","status":"affected"},{"version":"1.0.69","status":"affected"},{"version":"1.0.70","status":"affected"},{"version":"1.0.71","status":"affected"},{"version":"1.0.72","status":"affected"},{"version":"1.0.73","status":"affected"},{"version":"1.0.74","status":"affected"},{"version":"1.0.75","status":"affected"},{"version":"1.0.76","status":"affected"},{"version":"1.0.77","status":"affected"},{"version":"1.0.78","status":"affected"},{"version":"1.0.79","status":"affected"},{"version":"1.0.80","status":"affected"},{"version":"1.0.81","status":"affected"},{"version":"1.0.82","status":"affected"},{"version":"1.0.83","status":"affected"},{"version":"1.0.84","status":"affected"}]}],"descriptions":[{"lang":"en","value":"A security vulnerability has been detected in happyfish100 libfastcommon up to 1.0.84. Affected by this vulnerability is the function base64_decode of the file src/base64.c. The manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. The identifier of the patch is 82f66af3e252e3e137dba0c3891570f085e79adf. Applying a patch is the recommended action to fix this issue."}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":4.8,"vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":5.3,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":5.3,"vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":4.3,"vectorString":"AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C"}}],"timeline":[{"time":"2026-02-05T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-02-05T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-02-18T01:03:36.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"liloler (VulDB User)","type":"reporter"}],"references":[{"url":"https://vuldb.com/?id.344598","name":"VDB-344598 | happyfish100 libfastcommon base64.c base64_decode stack-based overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.344598","name":"VDB-344598 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.743873","name":"Submit #743873 | happyfish100 libfastcommon V1.0.84 and earlier Heap-based Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/happyfish100/libfastcommon/issues/55","tags":["issue-tracking"]},{"url":"https://github.com/happyfish100/libfastcommon/issues/55#issuecomment-3776757848","tags":["issue-tracking"]},{"url":"https://github.com/happyfish100/libfastcommon/issues/55#issue-3836362577","tags":["exploit","issue-tracking"]},{"url":"https://github.com/happyfish100/libfastcommon/commit/82f66af3e252e3e137dba0c3891570f085e79adf","tags":["patch"]},{"url":"https://github.com/happyfish100/libfastcommon/","tags":["product"]}],"tags":["x_open-source"]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-06T13:08:24.871953Z","id":"CVE-2026-2016","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-06T13:08:43.137Z"}}]}}