CVE-2026-89045 (GCVE-0-2026-89045)
Vulnerability from cvelistv5 – Published: 2026-09-10 17:39 – Updated: 2026-09-10 17:39
VLAI
EPSS
VEX
Title
zstd-jni 1.4.8-4 through 1.5.7-13 Denial of Service via Negative Length
Summary
zstd-jni versions 1.4.8-4 through 1.5.7-13 fail to validate negative length parameters in ZstdInputStreamNoFinalizer.read(), allowing attackers to trigger infinite loops. Attackers can pass negative length values to cause the read method to spin indefinitely while holding the stream monitor, blocking all other threads from accessing the stream.
Severity
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/luben/zstd-jni/security/adviso… | vendor-advisory |
| https://github.com/luben/zstd-jni/commit/dd08685e… | patch |
| https://github.com/luben/zstd-jni/blob/v1.5.7-13/… | technical-description |
| https://github.com/luben/zstd-jni/releases/tag/v1… | release-notes |
| https://github.com/luben/zstd-jni | product |
| https://www.vulncheck.com/advisories/zstd-jni-1.4… | third-party-advisory |
Impacted products
Date Public
2026-08-14 00:00
{
"containers": {
"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",
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"vendor": "luben",
"versions": [
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"status": "affected",
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],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Yu Bao, PayPal Cyber Security Team"
}
],
"datePublic": "2026-08-14T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "zstd-jni versions 1.4.8-4 through 1.5.7-13 fail to validate negative length parameters in ZstdInputStreamNoFinalizer.read(), allowing attackers to trigger infinite loops. Attackers can pass negative length values to cause the read method to spin indefinitely while holding the stream monitor, blocking all other threads from accessing the stream."
}
],
"metrics": [
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"attackRequirements": "NONE",
"attackVector": "LOCAL",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"version": "4.0",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
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"problemTypes": [
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"descriptions": [
{
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"description": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
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]
}
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"providerMetadata": {
"dateUpdated": "2026-09-10T17:39:34.866Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Security Advisory (GHSA-9jx2-gfp9-phfm)",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/luben/zstd-jni/security/advisories/GHSA-9jx2-gfp9-phfm"
},
{
"name": "Fix commit: reject a negative length in read and readInternal",
"tags": [
"patch"
],
"url": "https://github.com/luben/zstd-jni/commit/dd08685ef913a32e76fb27f43470035c06758646"
},
{
"name": "Guard that never checks a negative length at v1.5.7-13",
"tags": [
"technical-description"
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"url": "https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/ZstdInputStreamNoFinalizer.java#L133"
},
{
"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": "luben/zstd-jni",
"tags": [
"product"
],
"url": "https://github.com/luben/zstd-jni"
},
{
"name": "VulnCheck Advisory: zstd-jni 1.4.8-4 through 1.5.7-13 Denial of Service via Negative Length",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/zstd-jni-1.4.8-4-through-1.5.7-13-denial-of-service-via-negative-length"
}
],
"title": "zstd-jni 1.4.8-4 through 1.5.7-13 Denial of Service via Negative Length",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-89045",
"datePublished": "2026-09-10T17:39:34.866Z",
"dateReserved": "2026-09-10T16:45:18.503Z",
"dateUpdated": "2026-09-10T17:39:34.866Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-89045",
"date": "2026-09-11",
"epss": "0.00124",
"percentile": "0.02473"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-89045\",\"sourceIdentifier\":\"disclosure@vulncheck.com\",\"published\":\"2026-09-10T18:18:16.410\",\"lastModified\":\"2026-09-10T19:54:25.810\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"zstd-jni versions 1.4.8-4 through 1.5.7-13 fail to validate negative length parameters in ZstdInputStreamNoFinalizer.read(), allowing attackers to trigger infinite loops. Attackers can pass negative length values to cause the read method to spin indefinitely while holding the stream monitor, blocking all other threads from accessing the stream.\"}],\"affected\":[{\"source\":\"disclosure@vulncheck.com\",\"affectedData\":[{\"vendor\":\"luben\",\"product\":\"zstd-jni\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://repo1.maven.org/maven2/com/github/luben/zstd-jni/\",\"repo\":\"https://github.com/luben/zstd-jni\",\"packageURL\":\"pkg:maven/com.github.luben/zstd-jni\",\"versions\":[{\"version\":\"1.4.8-4\",\"lessThan\":\"1.5.7-14\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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\",\"baseScore\":5.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"LOW\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":4.0,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.5,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-835\"}]}],\"references\":[{\"url\":\"https://github.com/luben/zstd-jni\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/ZstdInputStreamNoFinalizer.java#L133\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://github.com/luben/zstd-jni/commit/dd08685ef913a32e76fb27f43470035c06758646\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://github.com/luben/zstd-jni/security/advisories/GHSA-9jx2-gfp9-phfm\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://www.vulncheck.com/advisories/zstd-jni-1.4.8-4-through-1.5.7-13-denial-of-service-via-negative-length\",\"source\":\"disclosure@vulncheck.com\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-09-11T06:01:58+00:00",
"cve": "CVE-2026-89045",
"id": "CVE-2026-89045",
"initial_release_date": "2026-09-10T17:39:34.866000+00:00",
"product_status:known_affected": "29",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "com.github.luben/zstd-jni: zstd-jni: Denial of Service via negative length parameter",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89045.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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