{"id":"EUVD-2026-106907","revision":null,"records":[{"revision":"2f5b4739007a4bd5a75f4048a7dba839","observedAt":"2026-10-28T17:46:48.824+00:00","statement":{"source":"cve-program","id":"CVE-2026-114104","aliases":[],"title":"adm-zip before 0.6.1 Duplicate ZIP Entry Name Validation Bypass","description":"adm-zip before 0.6.1 contains an inconsistent entry resolution vulnerability that allows attackers to bypass content validation by supplying ZIP archives with duplicate entry names. Attackers can craft archives where getEntry() returns the last duplicate while extractAllTo() writes the first, causing unvalidated bytes to be written to disk.","state":0,"publishedAt":"2026-10-21T00:37:05.291+00:00","modifiedAt":"2026-10-28T16:14:55.229+00:00","affected":[{"ecosystem":"Vendor product","name":"adm-zip","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"cthackers\",\n                    \"product\": \"adm-zip\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:npm/adm-zip\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"0.6.1\"\n                        },\n                        {\n                            \"version\": \"0.6.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.2,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/cthackers/adm-zip/security/advisories/GHSA-p634-w6r4-rjp2","https://www.vulncheck.com/advisories/adm-zip-before-0.6.1-duplicate-zip-entry-name-validation-bypass"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114104","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-114104","identifiers":["CVE-2026-114104"]},"retained":false,"historicalAffected":[]},{"revision":"f869f6daf6014fe8a85b2e0cf6275e1f","observedAt":"2026-10-30T01:58:35.181+00:00","statement":{"source":"euvd","id":"EUVD-2026-106907","aliases":["CVE-2026-114104","GHSA-mr8q-rv22-x3fr"],"title":"adm-zip before 0.6.1 contains an inconsistent entry resolution vulnerability that allows attackers to bypass content validation by supplying ZIP archives with duplicate entry names. Attackers can craft archives where getEntry() returns the …","description":"adm-zip before 0.6.1 contains an inconsistent entry resolution vulnerability that allows attackers to bypass content validation by supplying ZIP archives with duplicate entry names. Attackers can craft archives where getEntry() returns the last duplicate while extractAllTo() writes the first, causing unvalidated bytes to be written to disk.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.2,"severity":null}],"references":["https://github.com/cthackers/adm-zip/security/advisories/GHSA-p634-w6r4-rjp2","https://www.vulncheck.com/advisories/adm-zip-before-0.6.1-duplicate-zip-entry-name-validation-bypass"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-106907","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 21, 2026, 12:37:05 AM","dateUpdated":"Oct 28, 2026, 4:14:55 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-106907","identifiers":["EUVD-2026-106907","CVE-2026-114104","GHSA-mr8q-rv22-x3fr"]},"retained":false,"historicalAffected":[]},{"revision":"8f154da44db84903abc552486f1c6a7f","observedAt":"2026-10-29T06:48:04.607+00:00","statement":{"source":"nvd","id":"CVE-2026-114104","aliases":[],"title":"adm-zip before 0.6.1 contains an inconsistent entry resolution vulnerability that allows attackers to bypass content validation by supplying ZIP archives with duplicate entry names. Attackers can craft archives where getEntry() returns the …","description":"adm-zip before 0.6.1 contains an inconsistent entry resolution vulnerability that allows attackers to bypass content validation by supplying ZIP archives with duplicate entry names. Attackers can craft archives where getEntry() returns the last duplicate while extractAllTo() writes the first, causing unvalidated bytes to be written to disk.","state":0,"publishedAt":"2026-10-21T01:17:36.22+00:00","modifiedAt":"2026-10-28T17:17:47.73+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/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","score":8.2,"severity":"HIGH"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/cthackers/adm-zip/security/advisories/GHSA-p634-w6r4-rjp2","https://www.vulncheck.com/advisories/adm-zip-before-0.6.1-duplicate-zip-entry-name-validation-bypass"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-114104","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-436"],"productCriteria":[],"sourceDates":{"published":"2026-10-21T01:17:36.220","lastModified":"2026-10-28T17:17:47.730"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-114104","identifiers":["CVE-2026-114104"]},"retained":false,"historicalAffected":[]},{"revision":"f4a91799c5ef47b5927b4372b45366bf","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-p634-w6r4-rjp2","aliases":["CVE-2026-114104"],"title":"adm-zip: Duplicate ZIP entry names: getEntry() and extractAllTo() resolve to different content","description":"### Summary\n\nA ZIP file can contain two entries with the identical name. adm-zip keeps both in its internal entry list, but its name-lookup table only retains the last one written. `getEntry(name)` and `extractAllTo()` walk these two different internal structures, so they can each resolve a duplicate name to a *different* entry. An application that validates a named entry's contents via `getEntry()` before trusting an archive, then extracts the whole archive, can end up approving one file's content while a different file's bytes are what actually land on disk under that name.\n\n### Details\n- `zipFile.js:58-83` retains both entries in `entryList` but overwrites `entryTable[name]` with only the last one written.\n- `adm-zip.js:83-95,658-663` uses `entryTable` for `getEntry()` lookups — returns the *last* duplicate.\n- `adm-zip.js:769-914` iterates `entryList` for extraction — writes the *first* duplicate (sync, default overwrite policy).\n\n\n### PoC\n```js\nconst AdmZip = require('adm-zip');\nconst z = new AdmZip({ noSort: true });\nz.addFile('a.txt', Buffer.from('FIRST'));\nz.addFile('b.txt', Buffer.from('SECOND'));\nconst raw = Buffer.from(z.toBuffer());\n// rename the a.txt entry to b.txt directly in the raw bytes\nfor (let at = raw.indexOf('a.txt'); at >= 0; at = raw.indexOf('a.txt', at + 5)) {\n  raw.write('b.txt', at);\n}\nconst parsed = new AdmZip(raw, { noSort: true });\nconst validated = parsed.getEntry('b.txt').getData().toString();\nparsed.extractAllTo(outDir, false);\n// validated === \"SECOND\", but the file written to disk === \"FIRST\"\n```\n\nReproduced on the pinned commit (`2b4d84087d45344643e0183756e19191d52815cc`)\n\n### Impact\nAn application that checks a named entry's content before trusting an untrusted ZIP, then extracts it, can be made to approve different bytes than what actually gets written to disk — the classic check/use split that this kind of validate-then-extract pattern relies on.","state":0,"publishedAt":"2026-09-29T23:11:01+00:00","modifiedAt":"2026-10-21T10:57:22.7835194+00:00","affected":[{"ecosystem":"npm","name":"adm-zip","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.6.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/cthackers/adm-zip/security/advisories/GHSA-p634-w6r4-rjp2","https://github.com/cthackers/adm-zip/commit/05101d47b3b983b705cc3e66fc34366118ba7b99","https://github.com/cthackers/adm-zip","https://github.com/cthackers/adm-zip/releases/tag/v0.6.1"],"sourceUrl":"https://github.com/advisories/GHSA-p634-w6r4-rjp2","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-p634-w6r4-rjp2","identifiers":["GHSA-p634-w6r4-rjp2","CVE-2026-114104"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-31T03:47:09.5766450+00:00","complete":true,"records":1766,"lastAttemptAt":"2026-10-31T03:47:09.576645+00:00","lastSuccessAt":"2026-10-31T03:47:09.7314526+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:09.7314536+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-9266d7b009bf9c4a0ccdcb5cbdea7f905cb3c4d92fd3b41581ece16b2cfdc4e7-caecc587a0b75cf7beeacae1ff36f646a3aea789f7a0588a337b601f31e67ed5","complete":true,"records":417488,"lastAttemptAt":"2026-10-31T03:45:32.9429043+00:00","lastSuccessAt":"2026-10-31T03:45:32.9235987+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:45:32.9429043+00:00","snapshotPublishedAt":"2026-10-31T03:25:40+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-c5eb069e059248ab9c1b8cc754ce0885","complete":true,"records":13565,"lastAttemptAt":"2026-10-31T03:47:38.2106586+00:00","lastSuccessAt":"2026-10-31T03:47:38.206+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:38.206+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13637,"expectedIdentifiers":13637,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-31T03:47:09.5766450+00:00","complete":true,"records":1094,"lastAttemptAt":"2026-10-31T03:47:09.576645+00:00","lastSuccessAt":"2026-10-31T03:47:09.732237+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:09.7322372+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-388d7f08b33a4ea9a69648d0e90f07eb","complete":false,"records":13577,"lastAttemptAt":"2026-10-31T03:47:34.917396+00:00","lastSuccessAt":"2026-10-31T03:47:34.914+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:34.914+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13547,"expectedIdentifiers":13637,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-21dcd6662970dfea02e4ea60ee637115e8d92664947484d2b9276b3f6568a84f","complete":true,"records":9815,"lastAttemptAt":"2026-10-31T03:47:09.5192979+00:00","lastSuccessAt":"2026-10-30T23:47:34.1817587+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:09.5192979+00:00","snapshotPublishedAt":"2026-10-30T23:33:17+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-2de9ccc5290f060c7aa63f89c25dd76f655a64ba1aba7c05c97fa3bee4f09899","complete":true,"records":1967,"lastAttemptAt":"2026-10-31T03:45:32.9996003+00:00","lastSuccessAt":"2026-10-28T20:55:34.2982937+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:45:32.9996003+00:00","snapshotPublishedAt":"2026-10-28T20:03:08+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-f95f76cd406ae5bae3de632ad37fd2d5160b44f5e6b51748ac6f8f0c0c88e72b","complete":true,"records":3028,"lastAttemptAt":"2026-10-31T03:47:09.537336+00:00","lastSuccessAt":"2026-10-30T23:47:38.4914494+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:09.537336+00:00","snapshotPublishedAt":"2026-10-30T23:18:12+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-3ce2e3336768d0abd5b020f6f12bd5502a5deb02700e9d89d279597dce6e72ae","complete":true,"records":230992,"lastAttemptAt":"2026-10-31T03:47:09.3912134+00:00","lastSuccessAt":"2026-10-31T03:47:08.0119269+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:09.3912134+00:00","snapshotPublishedAt":"2026-10-31T03:03:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}