{"id":"CVE-2026-92000","revision":null,"records":[{"revision":"dbdc8117625f49338d79ceed61c9c9d7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-92000","aliases":[],"title":"adm-zip 0.5.14 through 0.6.0 Denial of Service via Zero Declared Uncompressed Size","description":"adm-zip versions 0.5.14 through 0.6.0 fail to apply zlib decompression output limits when ZIP entries declare zero uncompressed size. Attackers can craft malicious ZIP archives with highly compressible entries declaring zero size to exhaust memory and cause denial of service.","state":0,"publishedAt":"2026-09-15T20:56:45.78+00:00","modifiedAt":"2026-09-24T14:22:38.58+00:00","affected":[{"ecosystem":"https://www.npmjs.com/package/adm-zip","name":"adm-zip","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"cthackers\",\n                    \"product\": \"adm-zip\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"collectionURL\": \"https://www.npmjs.com/package/adm-zip\",\n                    \"packageName\": \"adm-zip\",\n                    \"packageURL\": \"pkg:npm/adm-zip\",\n                    \"repo\": \"https://github.com/cthackers/adm-zip\",\n                    \"programFiles\": [\n                        \"methods/inflater.js\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"0.5.14\",\n                            \"lessThan\": \"0.6.1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/cthackers/adm-zip/security/advisories/GHSA-rcw4-f5rp-g42v","https://github.com/cthackers/adm-zip/commit/491600683dacb6cb9fe0718a0eeb9cb5eb49afa6","https://github.com/cthackers/adm-zip/commit/8bc411184de1b5ca28138c53074fb61119994dde","https://github.com/cthackers/adm-zip/blob/v0.6.0/methods/inflater.js","https://github.com/cthackers/adm-zip","https://www.vulncheck.com/advisories/adm-zip-0.5.14-through-0.6.0-denial-of-service-via-zero-declared-uncompressed-size"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92000","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-92000","identifiers":["CVE-2026-92000"]},"retained":false,"historicalAffected":[]},{"revision":"c0e83e387e1a4a418f14ee4879759f83","observedAt":"2026-11-11T18:10:31.972+00:00","statement":{"source":"euvd","id":"EUVD-2026-80001","aliases":["CVE-2026-92000","GHSA-ffxc-vw9f-x2cp"],"title":"adm-zip versions 0.5.14 through 0.6.0 fail to apply zlib decompression output limits when ZIP entries declare zero uncompressed size. Attackers can craft malicious ZIP archives with highly compressible entries declaring zero size to exhaust…","description":"adm-zip versions 0.5.14 through 0.6.0 fail to apply zlib decompression output limits when ZIP entries declare zero uncompressed size. Attackers can craft malicious ZIP archives with highly compressible entries declaring zero size to exhaust memory and cause denial of service.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":null}],"references":["https://github.com/cthackers/adm-zip/security/advisories/GHSA-rcw4-f5rp-g42v","https://github.com/cthackers/adm-zip/commit/491600683dacb6cb9fe0718a0eeb9cb5eb49afa6","https://github.com/cthackers/adm-zip/commit/8bc411184de1b5ca28138c53074fb61119994dde","https://github.com/cthackers/adm-zip/blob/v0.6.0/methods/inflater.js","https://github.com/cthackers/adm-zip","https://www.vulncheck.com/advisories/adm-zip-0.5.14-through-0.6.0-denial-of-service-via-zero-declared-uncompressed-size"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-80001","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 15, 2026, 8:56:45 PM","dateUpdated":"Sep 24, 2026, 2:22:38 PM"},"relatedAdvisories":[{"id":"RHSA-2026:72722","title":"Red Hat Security Advisory: Ansible plug-ins for Red Hat Developer Hub Product Release Update","vulnerabilityIds":["CVE-2026-19534","CVE-2026-47683","CVE-2026-55553","CVE-2026-56859","CVE-2026-59869","CVE-2026-82417","CVE-2026-84375","CVE-2026-87776","CVE-2026-88932","CVE-2026-89011","CVE-2026-92000","CVE-2026-92942","CVE-2026-92958","CVE-2026-92959","CVE-2026-92961"]},{"id":"RHSA-2026:72712","title":"Red Hat Security Advisory: Ansible plug-ins for Red Hat Developer Hub Product Release Update","vulnerabilityIds":["CVE-2026-5038","CVE-2026-19534","CVE-2026-47683","CVE-2026-55553","CVE-2026-59869","CVE-2026-59879","CVE-2026-82417","CVE-2026-84375","CVE-2026-87776","CVE-2026-88932","CVE-2026-89011","CVE-2026-92000","CVE-2026-92942","CVE-2026-92958","CVE-2026-92959","CVE-2026-92961"]},{"id":"RHSA-2026:74609","title":"Red Hat Security Advisory: Cluster Observability Operator 1.5.3","vulnerabilityIds":["CVE-2026-19534","CVE-2026-39244","CVE-2026-41178","CVE-2026-42504","CVE-2026-45623","CVE-2026-56864","CVE-2026-56865","CVE-2026-59887","CVE-2026-63199","CVE-2026-71556","CVE-2026-73086","CVE-2026-75899","CVE-2026-75931","CVE-2026-75975","CVE-2026-76172","CVE-2026-84292","CVE-2026-84394","CVE-2026-84445","CVE-2026-84961","CVE-2026-92000","CVE-2026-100690"]}],"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-2026-80001","identifiers":["EUVD-2026-80001","CVE-2026-92000","GHSA-ffxc-vw9f-x2cp"]},"retained":false,"historicalAffected":[]},{"revision":"50fd457660f14e34b29d2afae1adcfb4","observedAt":"2026-10-25T16:19:22.228+00:00","statement":{"source":"nvd","id":"CVE-2026-92000","aliases":[],"title":"adm-zip versions 0.5.14 through 0.6.0 fail to apply zlib decompression output limits when ZIP entries declare zero uncompressed size. Attackers can craft malicious ZIP archives with highly compressible entries declaring zero size to exhaust…","description":"adm-zip versions 0.5.14 through 0.6.0 fail to apply zlib decompression output limits when ZIP entries declare zero uncompressed size. Attackers can craft malicious ZIP archives with highly compressible entries declaring zero size to exhaust memory and cause denial of service.","state":0,"publishedAt":"2026-09-15T21:16:49.167+00:00","modifiedAt":"2026-09-24T21:08:55.03+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/cthackers/adm-zip","https://github.com/cthackers/adm-zip/blob/v0.6.0/methods/inflater.js","https://github.com/cthackers/adm-zip/commit/491600683dacb6cb9fe0718a0eeb9cb5eb49afa6","https://github.com/cthackers/adm-zip/commit/8bc411184de1b5ca28138c53074fb61119994dde","https://github.com/cthackers/adm-zip/security/advisories/GHSA-rcw4-f5rp-g42v","https://www.vulncheck.com/advisories/adm-zip-0.5.14-through-0.6.0-denial-of-service-via-zero-declared-uncompressed-size"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92000","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-409"],"productCriteria":[],"sourceDates":{"published":"2026-09-15T21:16:49.167","lastModified":"2026-09-24T21:08:55.030"},"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-2026-92000","identifiers":["CVE-2026-92000"]},"retained":false,"historicalAffected":[]},{"revision":"f0510e5d6e1a462db05f5e7e2c8b2b6e","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-rcw4-f5rp-g42v","aliases":["CVE-2026-92000"],"title":"adm-zip: Decompression-bomb protection (fix for CVE-2026-39244) can be bypassed by declaring uncompressed size as 0","description":"**Affected package:** adm-zip (npm)\n**Affected version:** 0.6.0\n\n## Summary\n\nThe fix shipped for CVE-2026-39244 (`methods/inflater.js`) caps zlib's decompression output via `maxOutputLength: expectedLength`, where `expectedLength` is read directly from the ZIP entry's attacker-controlled \"uncompressed size\" header field (`CENLEN`/`LOCLEN`). This cap is only applied when `expectedLength > 0`:\n\n```js\nconst option = version >= 15 && expectedLength > 0 ? { maxOutputLength: expectedLength } : {};\nreturn zlib.inflateRawSync(inbuf, option);\n```\n\nIf an attacker sets the declared uncompressed-size field to exactly **0**, this condition is false, `option` becomes `{}`, and no output cap is passed to zlib at all. Node then falls back to zlib's own internal default limit (several GB), so a small, highly-compressible payload can still be decompressed to a very large size in memory -- the same class of resource-exhaustion issue the original CVE addressed, just triggered differently.\n\n## Steps to Reproduce\n\n1. Build a ZIP archive containing one DEFLATE-compressed entry whose real content is highly redundant (e.g. several MB of a repeated byte, achieving close to the ~1032:1 theoretical raw-DEFLATE compression ratio).\n2. Patch the entry's declared uncompressed-size fields (both the local file header copy and the central directory copy, 4-byte little-endian values) to `0`. The compressed bytes and CRC32 are left untouched -- CRC validation still passes because CRC is computed over the real decompressed output, not the declared size.\n3. Load the archive with `new AdmZip(buffer)` and call `.getEntries()[0].getData()` (or `readFile`/`readAsText`/`extractAllTo`/etc. -- all share the same code path).\n4. Observe: decompression succeeds and returns the full-size buffer with no size restriction applied, whereas the same real data with an honest (but undersized) declared value correctly throws `Cannot create a Buffer larger than N bytes`.\n\n## Proof of Concept\n\nAttached script demonstrates a controlled A/B comparison using the identical real payload in both cases -- only the declared-size header field differs:\n\n- **Control** (declared size = 1024 bytes, deliberately smaller than the true 4MB output): correctly throws, proving the cap mechanism works when `expectedLength > 0`.\n- **Bypass** (declared size = 0, identical real payload): succeeds and returns the full 4,194,304-byte buffer with zero restriction.\n\nVerified reproducible across 3 independent runs.\n\n## Impact\n\nAny application that calls adm-zip's read/extract methods on an untrusted ZIP file (upload handlers, CI artifact extraction, email attachment scanning, etc.) can be made to allocate an amount of memory bounded only by zlib's own internal default rather than any limit the application or adm-zip intends -- a small (tens-of-MB) upload can trigger multi-GB memory consumption, risking process crash/OOM.\n\n## Suggested Fix\n\nApply `maxOutputLength` unconditionally (e.g. defaulting to a sane absolute ceiling, or always passing the declared size regardless of whether it's 0), and/or add an independent compression-ratio check that doesn't rely solely on the attacker-supplied size field.","state":0,"publishedAt":"2026-09-29T18:25:20+00:00","modifiedAt":"2026-09-29T18:30:41.1548794+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:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/cthackers/adm-zip/security/advisories/GHSA-rcw4-f5rp-g42v","https://github.com/cthackers/adm-zip/commit/491600683dacb6cb9fe0718a0eeb9cb5eb49afa6","https://github.com/cthackers/adm-zip","https://github.com/cthackers/adm-zip/releases/tag/v0.6.1"],"sourceUrl":"https://github.com/advisories/GHSA-rcw4-f5rp-g42v","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-rcw4-f5rp-g42v","identifiers":["GHSA-rcw4-f5rp-g42v","CVE-2026-92000"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-12T06:54:08.8081877+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-12T06:54:08.8081877+00:00","lastSuccessAt":"2026-11-12T06:54:09.4926633+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:54:09.4926642+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-64752486c567b55b31fb0d7225f5222bcd0019564ac0ac5f0649e242c7b19299-031557bd84075d0efeb8f81d38e7e201c5767c1ec5ad4deb9375464dfdb790d3","complete":true,"records":424595,"lastAttemptAt":"2026-11-12T06:53:59.6712569+00:00","lastSuccessAt":"2026-11-12T06:53:59.6124706+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:53:59.6712569+00:00","snapshotPublishedAt":"2026-11-12T06:27:50+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-570328139368428ca550af1570d01579","complete":true,"records":13760,"lastAttemptAt":"2026-11-12T06:55:06.9273282+00:00","lastSuccessAt":"2026-11-12T06:55:06.923+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:55:06.923+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13813,"expectedIdentifiers":13813,"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":"2026-11-12T06:54:08.8081877+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-12T06:54:08.8081877+00:00","lastSuccessAt":"2026-11-12T06:54:09.7509822+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:54:09.7509833+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-5bd6a0be90c14da3820334c987af617f","complete":true,"records":13760,"lastAttemptAt":"2026-11-12T06:54:37.2126404+00:00","lastSuccessAt":"2026-11-12T06:54:37.209+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:54:37.209+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13813,"expectedIdentifiers":13813,"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-3562b6c78fd1bd0f0b55daf66a0926ae24f65e462df7f6d928caad458fc696bf","complete":true,"records":9947,"lastAttemptAt":"2026-11-12T06:54:07.7500838+00:00","lastSuccessAt":"2026-11-11T04:27:43.6877707+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:54:07.7500838+00:00","snapshotPublishedAt":"2026-11-11T03:32:46+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-456002455e0ab94bb92c95476d4e6d175c104cd594749982afd96c893728ecbc","complete":true,"records":2010,"lastAttemptAt":"2026-11-12T06:54:05.0323741+00:00","lastSuccessAt":"2026-11-11T02:36:58.1276999+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:54:05.0323741+00:00","snapshotPublishedAt":"2026-11-11T01:17:51+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-baa8362b4daf9e5f39d5563775a55935e7b442c0735d33274a921579ce4a0d66","complete":true,"records":3093,"lastAttemptAt":"2026-11-12T06:54:08.5688182+00:00","lastSuccessAt":"2026-11-11T13:00:02.5446881+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:54:08.5688182+00:00","snapshotPublishedAt":"2026-11-11T12:47:47+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-eb5176d73e87a862c4cae7484f3fd31f7d170139114b3e99e25926d661f6435b","complete":true,"records":231700,"lastAttemptAt":"2026-11-12T06:54:05.6319464+00:00","lastSuccessAt":"2026-11-12T05:58:39.2691741+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:54:05.6319464+00:00","snapshotPublishedAt":"2026-11-12T05:48:10+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}