CVE-2026-87824 (GCVE-0-2026-87824)
Vulnerability from cvelistv5
Published
2026-09-09 14:32
Modified
2026-09-20 00:35
Severity ?
8.7 (High) - 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
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attackers to read past buffer boundaries by supplying oversized per-sample lengths. Attackers can trigger out-of-bounds memory access by providing crafted sample length arrays that cause the native implementation to walk past the buffer allocation, resulting in JVM termination.
References
| URL | Tags | |
|---|---|---|
|
|
||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-87824",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-20T00:08:06.268866Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-20T00:35:32.204Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo1.maven.org/maven2/com/github/luben/zstd-jni/",
"defaultStatus": "unaffected",
"packageURL": "pkg:maven/com.github.luben/zstd-jni",
"product": "zstd-jni",
"repo": "https://github.com/luben/zstd-jni",
"vendor": "luben",
"versions": [
{
"lessThan": "1.5.7-14",
"status": "affected",
"version": "1.3.3-1",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Yu Bao, PayPal Cyber Security Team"
}
],
"datePublic": "2026-08-19T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attackers to read past buffer boundaries by supplying oversized per-sample lengths. Attackers can trigger out-of-bounds memory access by providing crafted sample length arrays that cause the native implementation to walk past the buffer allocation, resulting in JVM termination."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-125",
"description": "Out-of-bounds Read",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-09T14:32:44.099Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Security Advisory (GHSA-257p-3h6w-pg7h)",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/luben/zstd-jni/security/advisories/GHSA-257p-3h6w-pg7h"
},
{
"name": "Fix commit: validate the samples buffer capacity against the declared sample sizes",
"tags": [
"patch"
],
"url": "https://github.com/luben/zstd-jni/commit/bba6cfca2c0897f1fa004f4193247479f10da853"
},
{
"name": "Samples buffer capacity never read at v1.5.7-13",
"tags": [
"technical-description"
],
"url": "https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zdict.c"
},
{
"name": "Java wrapper that only checks the sample count at v1.5.7-13",
"tags": [
"technical-description"
],
"url": "https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java"
},
{
"name": "zstd-jni v1.5.7-14 Release Notes",
"tags": [
"release-notes"
],
"url": "https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14"
},
{
"name": "Commit that introduced the direct-buffer dictionary trainer without a samples capacity check (first released in 1.3.3-1)",
"tags": [
"technical-description",
"patch"
],
"url": "https://github.com/luben/zstd-jni/commit/53d3c6342883f7d6717b2477a7f9c1b4a4a56980"
},
{
"tags": [
"product"
],
"url": "https://github.com/luben/zstd-jni"
},
{
"name": "VulnCheck Advisory: zstd-jni 1.3.3-1 through 1.5.7-13 Out-of-Bounds Read via Zstd.trainFromBufferDirect",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/zstd-jni-1.3.3-1-through-1.5.7-13-out-of-bounds-read-via-zstd-trainfrombufferdirect"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "zstd-jni 1.3.3-1 through 1.5.7-13 Out-of-Bounds Read via Zstd.trainFromBufferDirect",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-87824",
"datePublished": "2026-09-09T14:32:44.099Z",
"dateReserved": "2026-09-09T10:32:34.110Z",
"dateUpdated": "2026-09-20T00:35:32.204Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-87824\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-20T00:08:06.268866Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-20T00:31:04.013Z\"}}], \"cna\": {\"title\": \"zstd-jni 1.3.3-1 through 1.5.7-13 Out-of-Bounds Read via Zstd.trainFromBufferDirect\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Yu Bao, PayPal Cyber Security Team\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 8.7, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"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\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\"}}, {\"format\": \"CVSS\", \"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:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"repo\": \"https://github.com/luben/zstd-jni\", \"vendor\": \"luben\", \"product\": \"zstd-jni\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.3.3-1\", \"lessThan\": \"1.5.7-14\", \"versionType\": \"custom\"}], \"packageURL\": \"pkg:maven/com.github.luben/zstd-jni\", \"collectionURL\": \"https://repo1.maven.org/maven2/com/github/luben/zstd-jni/\", \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-08-19T00:00:00.000Z\", \"references\": [{\"url\": \"https://github.com/luben/zstd-jni/security/advisories/GHSA-257p-3h6w-pg7h\", \"name\": \"GitHub Security Advisory (GHSA-257p-3h6w-pg7h)\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://github.com/luben/zstd-jni/commit/bba6cfca2c0897f1fa004f4193247479f10da853\", \"name\": \"Fix commit: validate the samples buffer capacity against the declared sample sizes\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zdict.c\", \"name\": \"Samples buffer capacity never read at v1.5.7-13\", \"tags\": [\"technical-description\"]}, {\"url\": \"https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java\", \"name\": \"Java wrapper that only checks the sample count at v1.5.7-13\", \"tags\": [\"technical-description\"]}, {\"url\": \"https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14\", \"name\": \"zstd-jni v1.5.7-14 Release Notes\", \"tags\": [\"release-notes\"]}, {\"url\": \"https://github.com/luben/zstd-jni/commit/53d3c6342883f7d6717b2477a7f9c1b4a4a56980\", \"name\": \"Commit that introduced the direct-buffer dictionary trainer without a samples capacity check (first released in 1.3.3-1)\", \"tags\": [\"technical-description\", \"patch\"]}, {\"url\": \"https://github.com/luben/zstd-jni\", \"tags\": [\"product\"]}, {\"url\": \"https://www.vulncheck.com/advisories/zstd-jni-1.3.3-1-through-1.5.7-13-out-of-bounds-read-via-zstd-trainfrombufferdirect\", \"name\": \"VulnCheck Advisory: zstd-jni 1.3.3-1 through 1.5.7-13 Out-of-Bounds Read via Zstd.trainFromBufferDirect\", \"tags\": [\"third-party-advisory\"]}], \"x_generator\": {\"engine\": \"vulncheck-endgame\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attackers to read past buffer boundaries by supplying oversized per-sample lengths. Attackers can trigger out-of-bounds memory access by providing crafted sample length arrays that cause the native implementation to walk past the buffer allocation, resulting in JVM termination.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-125\", \"description\": \"Out-of-bounds Read\"}]}], \"providerMetadata\": {\"orgId\": \"83251b91-4cc7-4094-a5c7-464a1b83ea10\", \"shortName\": \"VulnCheck\", \"dateUpdated\": \"2026-09-09T14:32:44.099Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-87824\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-20T00:35:32.204Z\", \"dateReserved\": \"2026-09-09T10:32:34.110Z\", \"assignerOrgId\": \"83251b91-4cc7-4094-a5c7-464a1b83ea10\", \"datePublished\": \"2026-09-09T14:32:44.099Z\", \"assignerShortName\": \"VulnCheck\"}",
"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…