257 lines
11 KiB
JSON
257 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-11940",
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"assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
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"state": "PUBLISHED",
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"assignerShortName": "PSF",
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"dateReserved": "2026-06-10T19:50:59.923Z",
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"datePublished": "2026-06-23T16:04:17.321Z",
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"dateUpdated": "2026-08-13T00:28:51.345Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"defaultStatus": "unaffected",
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"product": "CPython",
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"repo": "https://github.com/python/cpython",
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"vendor": "Python Software Foundation",
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"versions": [
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{
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"version": "0",
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"lessThan": "3.10.21",
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"status": "affected",
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"versionType": "python"
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},
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{
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"version": "3.11.0",
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"lessThan": "3.11.16",
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"status": "affected",
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"versionType": "python"
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},
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{
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"version": "3.12.0",
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"lessThan": "3.12.14",
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"status": "affected",
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"versionType": "python"
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},
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{
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"version": "3.13.0",
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"lessThan": "3.13.15",
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"status": "affected",
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"versionType": "python"
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},
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{
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"version": "3.14.0",
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"lessThan": "3.14.7",
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"status": "affected",
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"versionType": "python"
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},
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{
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"version": "3.15.0a1",
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"lessThan": "3.15.0b4",
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"status": "affected",
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"versionType": "python"
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}
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "reporter",
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"value": "Haruki Oyama (https://github.com/harukioya)"
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},
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{
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"lang": "en",
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"type": "coordinator",
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"value": "Stan Ulbrych (https://github.com/StanFromIreland)"
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},
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{
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"lang": "en",
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"type": "remediation reviewer",
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"value": "Petr Viktorin (https://github.com/encukou)"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"type": "text/html",
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"value": "<span>tarfile.extractall()</span> with the <span>'data'</span> or <span>'tar'</span>\n filter could be bypassed by a crafted archive where a hardlink \nreferences a symlink stored at a deeper name than the hardlink itself. \nThe extraction fallback validated the symlink at it's archived location \nbut recreated it at the hardlink's shallower<br>path, letting a relative\n target the filter judged contained escape the destination directory. \nThis allowed a malicious tar archive to create a symlink pointing \noutside the destination, enabling out-of-destination file reads or \nwrites. This was an incomplete fix of CVE-2025-4330."
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}
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],
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"value": "tarfile.extractall() with the 'data' or 'tar'\n filter could be bypassed by a crafted archive where a hardlink \nreferences a symlink stored at a deeper name than the hardlink itself. \nThe extraction fallback validated the symlink at it's archived location \nbut recreated it at the hardlink's shallower\npath, letting a relative\n target the filter judged contained escape the destination directory. \nThis allowed a malicious tar archive to create a symlink pointing \noutside the destination, enabling out-of-destination file reads or \nwrites. This was an incomplete fix of CVE-2025-4330."
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"attackVector": "NETWORK",
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"baseScore": 7.8,
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"baseSeverity": "HIGH",
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"exploitMaturity": "NOT_DEFINED",
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"privilegesRequired": "NONE",
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"providerUrgency": "NOT_DEFINED",
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"subAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "HIGH",
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"subIntegrityImpact": "HIGH",
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"userInteraction": "NONE",
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"valueDensity": "NOT_DEFINED",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-22",
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"description": "CWE-22",
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"lang": "en",
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"type": "CWE"
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}
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]
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},
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{
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"descriptions": [
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{
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"cweId": "CWE-59",
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"description": "CWE-59",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
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"shortName": "PSF",
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"dateUpdated": "2026-08-13T00:28:51.345Z"
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},
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"references": [
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/python/cpython/pull/151559"
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},
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{
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"tags": [
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"vendor-advisory"
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],
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"url": "https://mail.python.org/archives/list/security-announce@python.org/thread/LD6QIISNQFQYOIEPJNEUIPV7S3V76FZH/"
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},
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{
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"tags": [
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"issue-tracking"
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],
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"url": "https://github.com/python/cpython/issues/151558"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/python/cpython/commit/27dd970bf6b17ebca7c8ed486a40ab043ed7af8f"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/python/cpython/commit/672825e2f36a57e173959b0d9d409d4560dab8df"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/python/cpython/commit/771d12dda5140313db0ac550292987975651bbde"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/python/cpython/commit/79c06bd5c6afa3c440d50faf7ee1b147c8832b4c"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/python/cpython/commit/be13e86f6b9788a6f4d0419dffef72cbae5865c9"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/python/cpython/commit/e5fdbd8d5aa923bd9111b112ea73bd6ec7c47877"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/python/cpython/commit/0f852b3f07dd8e71e40326a51c02afbf16a42cc5"
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}
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],
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"source": {
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"discovery": "UNKNOWN"
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},
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"title": "tarfile extraction filter bypass allows escaping the destination directory",
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"x_generator": {
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"engine": "cvelib 1.8.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-06-23T17:57:25.652265Z",
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"id": "CVE-2026-11940",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-06-23T17:57:32.525Z"
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}
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}
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]
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}
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} |