{"id":"CVE-2026-115503","kind":"vulnerability","aliases":["CVE-2026-115503"],"related":[],"title":"Ghidra: crafted zip extension archive can exhaust disk space","description":"Ghidra before 12.2 contains an improper handling of highly compressed data vulnerability in ExtensionUtils.unzipToInstallationFolder() that allows attackers to exhaust disk space. Attackers can persuade users to install a crafted zip bomb extension archive that expands without size limits, causing later writes by Ghidra and other applications to fail.","summary":"Ghidra before 12.2 unzips extension archives without size limits, so a crafted zip bomb expands until the disk is full. An attacker who gets a user to install that extension can make later writes by Ghidra and other applications fail.","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-third-party-extensions"],"how_to_check":"- Run `Ghidra` and check Help > About for the version; versions below `12.2` are affected.","fix":"- Upgrade Ghidra to `12.2` or later.\n- Only install extensions from trusted sources until upgraded.","status":"open","published_at":"2026-10-22T20:17:06+00:00","first_seen_at":"2026-10-23T21:57:32+00:00","triaged_at":"2026-10-25T03:42:41+00:00","updated_at":"2026-10-25T03:42:41+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-10-25T03:42:41Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade Ghidra to `12.2` or later.\n- Only install extensions from trusted sources until upgraded.","reach":"local","title":"Ghidra: crafted zip extension archive can exhaust disk space","impact":"medium","summary":"Ghidra before 12.2 unzips extension archives without size limits, so a crafted zip bomb expands until the disk is full. An attacker who gets a user to install that extension can make later writes by Ghidra and other applications fail.","category":"other","nicknames":[],"who_cares":["ghidra","reverse-engineering","security-research"],"confidence":0.7,"needs_auth":"no","worst_case":"Disk fills up and other applications' writes fail","analyst_note":"","how_to_check":"- Run `Ghidra` and check Help > About for the version; versions below `12.2` are affected.","needs_analyst":false,"not_affected_if":["no-third-party-extensions","ghidra-12.2-or-later"],"who_is_affected":"Teams that run Ghidra and install third-party extensions into it. Exposure depends on a user installing a crafted extension archive; sources do not say whether automated or shared installs are involved. Teams using only the bundled features or not installing extensions can skip it.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"medium"},"cost_usd":0.000568,"input_tokens":3370,"output_tokens":462,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-115503':12A,15A '-2026':11A,14A '12.2':26B,66C 'allow':79C 'applic':62B,109C 'archiv':5A,29B,96C 'attack':45B,80C,85C 'bomb':37B,94C 'caus':102C 'compress':73C 'contain':67C 'craft':2A,35B,92C 'cve':10A,13A 'data':74C 'disk':8A,41B,83C 'engin':20B 'exhaust':7A,82C 'expand':38B,98C 'extens':4A,28B,53B,95C 'extensionutils.unziptoinstallationfolder':77C 'fail':63B,111C 'full':43B 'get':47B 'ghidra':1A,16B,24B,59B,64C,106C 'handl':70C 'high':72C 'improp':69C 'instal':51B,90C 'later':56B,103C 'limit':32B,101C 'make':55B 'persuad':87C 'research':23B 'revers':19B 'reverse-engin':18B 'secur':22B 'security-research':21B 'size':31B,100C 'space':9A,84C 'unzip':27B 'user':49B,88C 'vulner':75C 'without':30B,99C 'write':57B,104C 'zip':3A,36B,93C","nicknames":[],"mitigations":[],"who_affected":"Teams that run Ghidra and install third-party extensions into it. Exposure depends on a user installing a crafted extension archive; sources do not say whether automated or shared installs are involved. Teams using only the bundled features or not installing extensions can skip it.","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-2026-115503","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115503","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-2026-115503","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-115503","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"}