RHSA-2026:49681
Vulnerability from csaf_redhat - Published: 2026-08-03 13:31 - Updated: 2026-08-05 06:41A flaw was found in js-yaml, a JavaScript YAML parser and dumper. A remote attacker could exploit this vulnerability by providing a specially crafted YAML document containing a chain of mappings with merge keys. This could cause the parser to consume excessive CPU resources, leading to a Denial of Service (DoS) for the affected system.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:75b1c9d084f5cfd18aeced0d801bdff647bce79b83cfa27d3e2ba7954515ced0_ppc64le | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:7afedef5bd22487488160bdd97fbe1b0bf8648367bb47b255bf6c6834e62355e_amd64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:b037f3f76e9c0c3c957eed7e07a156dd48c9e4a85cf5e8c73ea58ab4dcd43f23_arm64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:bba1360a424f5aac9beffc5542cc8b465e0e820bf045bf74e6604455c52ce833_s390x | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:504dc6ba7a0458296699f5807a27fab2ad8d32dbf22596dd8f1429d22f547f31_s390x | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:7a49cfc03fd384d8cedb3b7324bff485138fc6bcb99c608d61215248ade5b10b_arm64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:9cd865290c175e0d49596f1995ea071ac9531205bf54799e67c5840154cb23a9_amd64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:e35a7f1774bd5005171c9e1fb717eb73a9d11e8c1aa4e2f606fbd1331e147805_ppc64le | — |
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A flaw was found in node-tar, a tar archive manipulation library for Node.js. This vulnerability allows a remote attacker to craft a small gzip bomb, which, when processed, can lead to the exhaustion of disk space and CPU resources. This occurs because node-tar does not enforce strict limits on the total decompressed data, the number of entries, or the decompression ratio during extraction and parsing. The primary impact is a Denial of Service (DoS), making the affected system or application unavailable.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:75b1c9d084f5cfd18aeced0d801bdff647bce79b83cfa27d3e2ba7954515ced0_ppc64le | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:7afedef5bd22487488160bdd97fbe1b0bf8648367bb47b255bf6c6834e62355e_amd64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:b037f3f76e9c0c3c957eed7e07a156dd48c9e4a85cf5e8c73ea58ab4dcd43f23_arm64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:bba1360a424f5aac9beffc5542cc8b465e0e820bf045bf74e6604455c52ce833_s390x | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:504dc6ba7a0458296699f5807a27fab2ad8d32dbf22596dd8f1429d22f547f31_s390x | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:7a49cfc03fd384d8cedb3b7324bff485138fc6bcb99c608d61215248ade5b10b_arm64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:9cd865290c175e0d49596f1995ea071ac9531205bf54799e67c5840154cb23a9_amd64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:e35a7f1774bd5005171c9e1fb717eb73a9d11e8c1aa4e2f606fbd1331e147805_ppc64le | — |
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A flaw was found in node-tar, a tar archive manipulation library for Node.js. A remote attacker could exploit this vulnerability by providing a specially crafted tar archive with a negative entry size in its header. This malformed header causes the archive scanner to enter an infinite loop, repeatedly parsing the same header and preventing further processing. This can lead to a denial of service (DoS) condition, making the affected system or application unresponsive.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:75b1c9d084f5cfd18aeced0d801bdff647bce79b83cfa27d3e2ba7954515ced0_ppc64le | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:7afedef5bd22487488160bdd97fbe1b0bf8648367bb47b255bf6c6834e62355e_amd64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:b037f3f76e9c0c3c957eed7e07a156dd48c9e4a85cf5e8c73ea58ab4dcd43f23_arm64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:bba1360a424f5aac9beffc5542cc8b465e0e820bf045bf74e6604455c52ce833_s390x | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:504dc6ba7a0458296699f5807a27fab2ad8d32dbf22596dd8f1429d22f547f31_s390x | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:7a49cfc03fd384d8cedb3b7324bff485138fc6bcb99c608d61215248ade5b10b_arm64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:9cd865290c175e0d49596f1995ea071ac9531205bf54799e67c5840154cb23a9_amd64 | — |
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| Unresolved product id: Red Hat OpenShift Service Mesh 3.2:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:e35a7f1774bd5005171c9e1fb717eb73a9d11e8c1aa4e2f606fbd1331e147805_ppc64le | — |
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"summary": "https://www.cve.org/CVERecord?id=CVE-2026-59873",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-59873"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-59873",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59873"
},
{
"category": "external",
"summary": "https://github.com/isaacs/node-tar/commit/2812e9338665659b183aa7226518c307044957d3",
"url": "https://github.com/isaacs/node-tar/commit/2812e9338665659b183aa7226518c307044957d3"
},
{
"category": "external",
"summary": "https://github.com/isaacs/node-tar/releases/tag/v7.5.19",
"url": "https://github.com/isaacs/node-tar/releases/tag/v7.5.19"
},
{
"category": "external",
"summary": "https://github.com/isaacs/node-tar/security/advisories/GHSA-23hp-3jrh-7fpw",
"url": "https://github.com/isaacs/node-tar/security/advisories/GHSA-23hp-3jrh-7fpw"
}
],
"release_date": "2026-07-08T15:22:40.077000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-08-03T13:31:33+00:00",
"details": "See Kiali 2.17.12 documentation at https://docs.redhat.com/en/documentation/red_hat_openshift_service_mesh/3.2/html/observability/kiali-operator-provided-by-red-hat",
"product_ids": [
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"restart_required": {
"category": "none"
},
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"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
"product_ids": [
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"scores": [
{
"cvss_v3": {
"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"
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]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "tar: node-tar: Denial of Service via crafted gzip bomb"
},
{
"cve": "CVE-2026-59874",
"cwe": {
"id": "CWE-606",
"name": "Unchecked Input for Loop Condition"
},
"discovery_date": "2026-07-08T16:01:09.952291+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2498116"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in node-tar, a tar archive manipulation library for Node.js. A remote attacker could exploit this vulnerability by providing a specially crafted tar archive with a negative entry size in its header. This malformed header causes the archive scanner to enter an infinite loop, repeatedly parsing the same header and preventing further processing. This can lead to a denial of service (DoS) condition, making the affected system or application unresponsive.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "tar: Node-tar: Denial of Service via malformed tar archive header",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This Important denial of service flaw in node-tar affects Red Hat products that process untrusted tar archives. A remote attacker can provide a specially crafted archive with a malformed header, leading to an infinite loop during parsing and causing the application to become unresponsive. This can impact the availability of services relying on node-tar for archive manipulation.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-59874"
},
{
"category": "external",
"summary": "RHBZ#2498116",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2498116"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-59874",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-59874"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-59874",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59874"
},
{
"category": "external",
"summary": "https://github.com/isaacs/node-tar/commit/9e78bf058b2c22dd4d52e00d8922d5c06fc2f7b5",
"url": "https://github.com/isaacs/node-tar/commit/9e78bf058b2c22dd4d52e00d8922d5c06fc2f7b5"
},
{
"category": "external",
"summary": "https://github.com/isaacs/node-tar/releases/tag/v7.5.18",
"url": "https://github.com/isaacs/node-tar/releases/tag/v7.5.18"
},
{
"category": "external",
"summary": "https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w",
"url": "https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w"
}
],
"release_date": "2026-07-08T15:23:47.527000+00:00",
"remediations": [
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"date": "2026-08-03T13:31:33+00:00",
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"privilegesRequired": "NONE",
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"threats": [
{
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"details": "Important"
}
],
"title": "tar: Node-tar: Denial of Service via malformed tar archive header"
}
]
}
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.