{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53600", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-09T19:39:52.404Z", "datePublished": "2026-09-02T16:10:27.461Z", "dateUpdated": "2026-09-02T18:57:48.269Z"}, "containers": {"cna": {"title": "async-tar PAX extension-header desync enables tar entry/content smuggling", "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "lang": "en", "description": "CWE-20: Improper Input Validation", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-843", "lang": "en", "description": "CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.3, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/dignifiedquire/async-tar/security/advisories/GHSA-35rm-7j9c-2f7m", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/dignifiedquire/async-tar/security/advisories/GHSA-35rm-7j9c-2f7m"}, {"name": "https://github.com/dignifiedquire/async-tar/releases/tag/v0.6.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/dignifiedquire/async-tar/releases/tag/v0.6.1"}], "affected": [{"vendor": "dignifiedquire", "product": "async-tar", "versions": [{"version": "< 0.6.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-02T16:10:27.461Z"}, "descriptions": [{"lang": "en", "value": "async-tar is a tar archive reading/writing library for async Rust. Prior to version 0.6.1, async-tar mis-applies a buffered PAX size extension to an intermediary extension header (a GNU longname L, a GNU longlink K, or a PAX x/g header) instead of to the next file entry. POSIX requires a PAX extended-header record set to describe the next file entry, never an intervening extension header. Because poll_next_raw (src/archive.rs) threads the buffered PAX records into the size computation of whatever raw header it reads next \u2014 and that header can be an intermediary L \u2014 the stream cursor is advanced by an attacker-chosen amount when the L body is consumed. The parser then desyncs relative to a POSIX-correct tar parser (e.g. GNU tar), reading subsequent bytes at the wrong block boundary. This issue has been patched in version 0.6.1."}], "source": {"advisory": "GHSA-35rm-7j9c-2f7m", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/dignifiedquire/async-tar/security/advisories/GHSA-35rm-7j9c-2f7m", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-02T18:57:40.791866Z", "id": "CVE-2026-53600", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-02T18:57:48.269Z"}}]}}

{}

{"affected": [{"affectedData": [{"product": "async-tar", "vendor": "dignifiedquire", "versions": [{"status": "affected", "version": "< 0.6.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "async-tar is a tar archive reading/writing library for async Rust. Prior to version 0.6.1, async-tar mis-applies a buffered PAX size extension to an intermediary extension header (a GNU longname L, a GNU longlink K, or a PAX x/g header) instead of to the next file entry. POSIX requires a PAX extended-header record set to describe the next file entry, never an intervening extension header. Because poll_next_raw (src/archive.rs) threads the buffered PAX records into the size computation of whatever raw header it reads next \u2014 and that header can be an intermediary L \u2014 the stream cursor is advanced by an attacker-chosen amount when the L body is consumed. The parser then desyncs relative to a POSIX-correct tar parser (e.g. GNU tar), reading subsequent bytes at the wrong block boundary. This issue has been patched in version 0.6.1."}], "id": "CVE-2026-53600", "lastModified": "2026-09-02T19:17:21.223", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53600", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-02T18:57:40.791866Z", "version": "2.0.3"}}]}, "published": "2026-09-02T16:17:17.983", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/dignifiedquire/async-tar/releases/tag/v0.6.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/dignifiedquire/async-tar/security/advisories/GHSA-35rm-7j9c-2f7m"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/dignifiedquire/async-tar/security/advisories/GHSA-35rm-7j9c-2f7m"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-843"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "async-tar: async-tar: Tar entry/content smuggling via PAX extension-header desynchronization", "id": "2527648", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527648"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-1286", "details": ["A flaw was found in async-tar, a library for reading and writing tar archives in Rust. The library incorrectly applies a buffered PAX size extension to an intermediary extension header instead of the intended next file entry. This allows an attacker to craft a malicious tar archive that manipulates the stream cursor, causing the parser to desynchronize. This desynchronization can lead to differential extraction or tar entry/content smuggling, where async-tar extracts different files or contents than a POSIX-compliant tar parser, potentially allowing an attacker to hide malicious payloads or alter expected file contents."], "name": "CVE-2026-53600", "package_state": [{"cpe": "cpe:/a:redhat:trusted_profile_analyzer:3", "fix_state": "Not affected", "package_name": "rhtpa/rhtpa-rhel10", "product_name": "Red Hat Trusted Profile Analyzer"}], "public_date": "2026-09-02T16:10:27Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53600\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53600\nhttps://github.com/dignifiedquire/async-tar/releases/tag/v0.6.1\nhttps://github.com/dignifiedquire/async-tar/security/advisories/GHSA-35rm-7j9c-2f7m"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.6.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "async-tar", "source": "cna", "vendor": "dignifiedquire"}, "product": "async-tar", "vendor": "dignifiedquire"}], "created": "2026-09-03T10:15:05.533241+00:00", "updated": "2026-09-03T15:34:26.232983+00:00", "vendors": ["dignifiedquire", "dignifiedquire$PRODUCT$async-tar"]}