{"id":"CVE-2026-115398","kind":"vulnerability","aliases":["CVE-2026-115398"],"related":[],"title":"Ghidra: crafted TAR or ZIP archive exhausts memory and hangs session","description":"Ghidra before 12.2 contains a resource allocation without limits vulnerability in FileSystemIndexHelper used by TarFileSystem and ZipFileSystem, which store unbounded archive entries. Attackers can persuade a user to open or batch-import a crafted TAR or ZIP archive with excessive entries to exhaust the Java heap and hang the session.","summary":"Ghidra before 12.2 stores an unbounded number of entries when it indexes TAR and ZIP archives through FileSystemIndexHelper. A crafted archive with excessive entries can exhaust the Java heap and hang the session, a denial of service rather than code execution.","severity":"medium","cvss":6.8,"epss":0.00121,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["ghidra","other","reverse-engineering","security-research"],"not_affected_if":["ghidra-12.2-or-later","no-untrusted-archives"],"how_to_check":"- Run `ghidra --version` or check the version shown in the Ghidra About dialog and compare against `12.2`\n- Confirm whether the team opens or batch-imports untrusted TAR or ZIP archives in Ghidra","fix":"- Upgrade Ghidra to `12.2` or later\n- Until upgraded, avoid opening or batch-importing archives from untrusted sources","status":"open","published_at":"2026-10-22T20:17:06+00:00","first_seen_at":"2026-10-23T21:57:32+00:00","triaged_at":"2026-10-25T03:42:43+00:00","updated_at":"2026-10-25T03:42:43+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-10-25T03:42:43Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade Ghidra to `12.2` or later\n- Until upgraded, avoid opening or batch-importing archives from untrusted sources","reach":"local","title":"Ghidra: crafted TAR or ZIP archive exhausts memory and hangs session","impact":"low","summary":"Ghidra before 12.2 stores an unbounded number of entries when it indexes TAR and ZIP archives through FileSystemIndexHelper. A crafted archive with excessive entries can exhaust the Java heap and hang the session, a denial of service rather than code execution.","category":"other","nicknames":[],"who_cares":["ghidra","reverse-engineering","security-research"],"confidence":0.7,"needs_auth":"no","worst_case":"Ghidra session hangs from memory exhaustion; denial of service only","analyst_note":"","how_to_check":"- Run `ghidra --version` or check the version shown in the Ghidra About dialog and compare against `12.2`\n- Confirm whether the team opens or batch-imports untrusted TAR or ZIP archives in Ghidra","needs_analyst":false,"not_affected_if":["ghidra-12.2-or-later","no-untrusted-archives"],"who_is_affected":"Teams that run Ghidra before 12.2 and open or batch-import archives they did not create. The risk depends on a person being persuaded to open a crafted archive, so analysts working only on their own binaries are less exposed.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"unknown"},"cost_usd":0.000605,"input_tokens":3384,"output_tokens":534,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-115398':14A,17A '-2026':13A,16A '12.2':28B,69C 'alloc':73C 'archiv':6A,41B,46B,87C,105C 'attack':89C 'batch':98C 'batch-import':97C 'code':65B 'contain':70C 'craft':2A,45B,101C 'cve':12A,15A 'denial':60B 'engin':22B 'entri':34B,49B,88C,108C 'excess':48B,107C 'execut':66B 'exhaust':7A,51B,110C 'filesystemindexhelp':43B,78C 'ghidra':1A,18B,26B,67C 'hang':10A,56B,115C 'heap':54B,113C 'import':99C 'index':37B 'java':53B,112C 'limit':75C 'memori':8A 'number':32B 'open':95C 'persuad':91C 'rather':63B 'research':25B 'resourc':72C 'revers':21B 'reverse-engin':20B 'secur':24B 'security-research':23B 'servic':62B 'session':11A,58B,117C 'store':29B,85C 'tar':3A,38B,102C 'tarfilesystem':81C 'unbound':31B,86C 'use':79C 'user':93C 'vulner':76C 'without':74C 'zip':5A,40B,104C 'zipfilesystem':83C","nicknames":[],"mitigations":[],"who_affected":"Teams that run Ghidra before 12.2 and open or batch-import archives they did not create. The risk depends on a person being persuaded to open a crafted archive, so analysts working only on their own binaries are less exposed.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-22T20:17:06+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-115398","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115398","severity":null,"published_at":"2026-10-22T20:17:06+00:00","modified_at":"2026-10-23T17:05:04+00:00","first_seen_at":"2026-10-23T21:57:32+00:00","fetched_at":"2026-10-23T22:29:03+00:00","note":null},{"source":"epss","external_id":"CVE-2026-115398","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-115398","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T07:15:51+00:00","fetched_at":"2026-10-24T07:15:51+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}