CVE-2026-9538 (GCVE-0-2026-9538)
Vulnerability from cvelistv5
Published
2026-05-26 00:18
Modified
2026-05-28 13:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Summary
Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header.
_read_tar() reads each entry's payload with $handle->read($$data, $block), where $block is derived from the entry's 12-byte size field in the tar header with no upper bound on that value.
A crafted header declaring a multi-gigabyte size causes Perl to allocate a scalar of that size.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| BINGOS | Archive::Tar |
Version: 0 < 3.10 |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2026-05-26T03:06:03.290Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/05/26/4"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-9538",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-28T13:16:04.042321Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-28T13:16:08.447Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "Archive-Tar",
"product": "Archive::Tar",
"programFiles": [
"lib/Archive/Tar.pm"
],
"programRoutines": [
{
"name": "Archive::Tar::_read_tar"
}
],
"repo": "https://github.com/jib/archive-tar-new",
"vendor": "BINGOS",
"versions": [
{
"lessThan": "3.10",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header.\n\n_read_tar() reads each entry\u0027s payload with $handle-\u003eread($$data, $block), where $block is derived from the entry\u0027s 12-byte size field in the tar header with no upper bound on that value.\n\nA crafted header declaring a multi-gigabyte size causes Perl to allocate a scalar of that size."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-789",
"description": "CWE-789 Memory Allocation with Excessive Size Value",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-26T00:18:43.704Z",
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://github.com/jib/archive-tar-new/commit/f9af01426038e29d9578825a0cd3626946ab08c7.patch"
},
{
"tags": [
"release-notes"
],
"url": "https://metacpan.org/release/BINGOS/Archive-Tar-3.10/changes"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to Archive::Tar 3.10 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"timeline": [
{
"lang": "en",
"time": "2026-05-25T00:00:00.000Z",
"value": "Issue reported."
},
{
"lang": "en",
"time": "2026-05-25T00:00:00.000Z",
"value": "Version 3.10 released."
}
],
"title": "Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header",
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"assignerShortName": "CPANSec",
"cveId": "CVE-2026-9538",
"datePublished": "2026-05-26T00:18:43.704Z",
"dateReserved": "2026-05-25T23:04:04.116Z",
"dateUpdated": "2026-05-28T13:16:08.447Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-9538\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-28T13:16:04.042321Z\"}}}], \"providerMetadata\": {\"shortName\": \"CISA-ADP\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"dateUpdated\": \"2026-05-28T13:15:58.771Z\"}}], \"cna\": {\"title\": \"Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"affected\": [{\"repo\": \"https://github.com/jib/archive-tar-new\", \"vendor\": \"BINGOS\", \"product\": \"Archive::Tar\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"3.10\", \"versionType\": \"custom\"}], \"packageName\": \"Archive-Tar\", \"programFiles\": [\"lib/Archive/Tar.pm\"], \"collectionURL\": \"https://cpan.org/modules\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"Archive::Tar::_read_tar\"}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-05-25T00:00:00.000Z\", \"value\": \"Issue reported.\"}, {\"lang\": \"en\", \"time\": \"2026-05-25T00:00:00.000Z\", \"value\": \"Version 3.10 released.\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade to Archive::Tar 3.10 or later.\"}], \"references\": [{\"url\": \"https://github.com/jib/archive-tar-new/commit/f9af01426038e29d9578825a0cd3626946ab08c7.patch\", \"tags\": [\"patch\"]}, {\"url\": \"https://metacpan.org/release/BINGOS/Archive-Tar-3.10/changes\", \"tags\": [\"release-notes\"]}], \"x_generator\": {\"engine\": \"cpansec-cna-tool 0.1\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header.\\n\\n_read_tar() reads each entry\u0027s payload with $handle-\u003eread($$data, $block), where $block is derived from the entry\u0027s 12-byte size field in the tar header with no upper bound on that value.\\n\\nA crafted header declaring a multi-gigabyte size causes Perl to allocate a scalar of that size.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-789\", \"description\": \"CWE-789 Memory Allocation with Excessive Size Value\"}]}], \"providerMetadata\": {\"orgId\": \"9b29abf9-4ab0-4765-b253-1875cd9b441e\", \"shortName\": \"CPANSec\", \"dateUpdated\": \"2026-05-26T00:18:43.704Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-9538\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-26T03:06:03.290Z\", \"dateReserved\": \"2026-05-25T23:04:04.116Z\", \"assignerOrgId\": \"9b29abf9-4ab0-4765-b253-1875cd9b441e\", \"datePublished\": \"2026-05-26T00:18:43.704Z\", \"assignerShortName\": \"CPANSec\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…