RHSA-2026:66363
Vulnerability from csaf_redhat - Published: 2026-09-10 08:49 - Updated: 2026-09-10 22:01A flaw was found in the `encoding/asn1` package in Go. An attacker could provide a specially crafted, deeply-nested Abstract Syntax Notation One (ASN.1) structure, leading to excessive recursion during the `Unmarshal` operation. This could result in stack exhaustion and a Denial of Service (DoS) condition.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:28f303432f34c0c60815efb140f2d3d26d1f0e9cd1dcb8246ec9f12944d98629_ppc64le | — |
Vendor Fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6603672dc04b2fbbb3e043e9180da5d83e690865cceb9680ba07c417f4385788_amd64 | — |
Vendor Fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6d3ac3ccefd4ac8c2f25e543718d3dcc8597a64e8a479c1300440abe47388cc4_s390x | — |
Vendor Fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:f369f5758ae02eb3bc79cdfc9067f56301e295e329dca2d24a71703582c0295a_arm64 | — |
Vendor Fix
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A flaw was found in OpenTelemetry-Go. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by sending oversized or invalid baggage headers. The `Parse` function, in affected versions, failed to reject raw-length inputs, leading to excessive processing and error logging when handling these large inputs.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:28f303432f34c0c60815efb140f2d3d26d1f0e9cd1dcb8246ec9f12944d98629_ppc64le | — |
Vendor Fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6603672dc04b2fbbb3e043e9180da5d83e690865cceb9680ba07c417f4385788_amd64 | — |
Vendor Fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6d3ac3ccefd4ac8c2f25e543718d3dcc8597a64e8a479c1300440abe47388cc4_s390x | — |
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:f369f5758ae02eb3bc79cdfc9067f56301e295e329dca2d24a71703582c0295a_arm64 | — |
Vendor Fix
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A flaw was found in golang.org/x/text. The norm.Iter component can enter an infinite loop when processing input that contains invalid UTF-8 (Unicode Transformation Format - 8-bit) bytes. A remote attacker could exploit this vulnerability by providing specially crafted input, leading to a Denial of Service (DoS) condition where the affected application becomes unresponsive.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:28f303432f34c0c60815efb140f2d3d26d1f0e9cd1dcb8246ec9f12944d98629_ppc64le | — |
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6603672dc04b2fbbb3e043e9180da5d83e690865cceb9680ba07c417f4385788_amd64 | — |
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6d3ac3ccefd4ac8c2f25e543718d3dcc8597a64e8a479c1300440abe47388cc4_s390x | — |
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:f369f5758ae02eb3bc79cdfc9067f56301e295e329dca2d24a71703582c0295a_arm64 | — |
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A flaw was found in the `net/http` component of the Go standard library. When a server is configured to support unencrypted HTTP/2, it reads initial bytes from new connections to detect the HTTP/2 client preface. However, the `ReadHeaderTimeout` is not correctly applied during this process. This oversight could allow a remote attacker to maintain open connections indefinitely, potentially leading to a Denial of Service (DoS) by exhausting server resources.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:28f303432f34c0c60815efb140f2d3d26d1f0e9cd1dcb8246ec9f12944d98629_ppc64le | — |
Vendor Fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6603672dc04b2fbbb3e043e9180da5d83e690865cceb9680ba07c417f4385788_amd64 | — |
Vendor Fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6d3ac3ccefd4ac8c2f25e543718d3dcc8597a64e8a479c1300440abe47388cc4_s390x | — |
Vendor Fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:f369f5758ae02eb3bc79cdfc9067f56301e295e329dca2d24a71703582c0295a_arm64 | — |
Vendor Fix
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A flaw was found in the `html/template` component of Go (golang). Pathological inputs could prematurely close an unescaped forward slash ('/'), allowing an attacker to inject arbitrary content. This could lead to Cross-Site Scripting (XSS), where malicious scripts are executed in a user's browser, potentially compromising user data or actions.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:28f303432f34c0c60815efb140f2d3d26d1f0e9cd1dcb8246ec9f12944d98629_ppc64le | — |
Vendor Fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6603672dc04b2fbbb3e043e9180da5d83e690865cceb9680ba07c417f4385788_amd64 | — |
Vendor Fix
fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6d3ac3ccefd4ac8c2f25e543718d3dcc8597a64e8a479c1300440abe47388cc4_s390x | — |
Vendor Fix
fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:f369f5758ae02eb3bc79cdfc9067f56301e295e329dca2d24a71703582c0295a_arm64 | — |
Vendor Fix
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A flaw was found in `net/url`, a component of `golang`. This vulnerability arises when resolving relative paths that contain numerous parent directory ('..') segments. A remote attacker could exploit this by providing a specially crafted path, leading to quadratic time complexity and excessive memory allocation. This can result in a Denial of Service (DoS) due to resource exhaustion.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:28f303432f34c0c60815efb140f2d3d26d1f0e9cd1dcb8246ec9f12944d98629_ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6603672dc04b2fbbb3e043e9180da5d83e690865cceb9680ba07c417f4385788_amd64 | — |
Vendor Fix
fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6d3ac3ccefd4ac8c2f25e543718d3dcc8597a64e8a479c1300440abe47388cc4_s390x | — |
Vendor Fix
fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:f369f5758ae02eb3bc79cdfc9067f56301e295e329dca2d24a71703582c0295a_arm64 | — |
Vendor Fix
fix
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A flaw was found in the `crypto/tls` package, part of `golang`. A malicious client can exploit this vulnerability by continuously sending KeyUpdate messages to a server. This forces the server to perform indefinite key derivation operations, leading to resource exhaustion and a Denial of Service (DoS) condition.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:28f303432f34c0c60815efb140f2d3d26d1f0e9cd1dcb8246ec9f12944d98629_ppc64le | — |
Vendor Fix
fix
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|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6603672dc04b2fbbb3e043e9180da5d83e690865cceb9680ba07c417f4385788_amd64 | — |
Vendor Fix
fix
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|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6d3ac3ccefd4ac8c2f25e543718d3dcc8597a64e8a479c1300440abe47388cc4_s390x | — |
Vendor Fix
fix
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| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:f369f5758ae02eb3bc79cdfc9067f56301e295e329dca2d24a71703582c0295a_arm64 | — |
Vendor Fix
fix
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A flaw was found in go-git, an extensible Git implementation library. Worktree operations, such as checkout, status, and add, resolve symbolic links within the working tree without proper boundary confinement. This allows a remote attacker to craft a malicious repository containing a symlink, which, when cloned and its worktree operations are used, can lead to reading from or writing to arbitrary files outside the intended working directory. This could result in information disclosure or arbitrary file modification.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:28f303432f34c0c60815efb140f2d3d26d1f0e9cd1dcb8246ec9f12944d98629_ppc64le | — |
Vendor Fix
fix
Workaround
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|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6603672dc04b2fbbb3e043e9180da5d83e690865cceb9680ba07c417f4385788_amd64 | — |
Vendor Fix
fix
Workaround
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|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6d3ac3ccefd4ac8c2f25e543718d3dcc8597a64e8a479c1300440abe47388cc4_s390x | — |
Vendor Fix
fix
Workaround
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|
| Unresolved product id: external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:f369f5758ae02eb3bc79cdfc9067f56301e295e329dca2d24a71703582c0295a_arm64 | — |
Vendor Fix
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Workaround
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},
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"title": "Statement"
},
{
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"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"
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"title": "Vulnerability description"
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{
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"title": "Statement"
},
{
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"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"
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{
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"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": "net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution"
},
{
"cve": "CVE-2026-56862",
"cwe": {
"id": "CWE-1050",
"name": "Excessive Platform Resource Consumption within a Loop"
},
"discovery_date": "2026-08-13T22:16:41.928450+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2515839"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the `crypto/tls` package, part of `golang`. A malicious client can exploit this vulnerability by continuously sending KeyUpdate messages to a server. This forces the server to perform indefinite key derivation operations, leading to resource exhaustion and a Denial of Service (DoS) condition.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is an Important denial of service vulnerability in the `golang` `crypto/tls` package. A remote, unauthenticated attacker can exploit this flaw by continuously sending `KeyUpdate` messages during a TLS handshake, forcing the server to perform indefinite key derivation operations. This resource exhaustion can lead to a denial of service for applications and services in Red Hat products that use the affected `crypto/tls` library and are exposed to untrusted network clients.",
"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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},
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"category": "external",
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},
{
"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2026-56862"
},
{
"category": "external",
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56862"
},
{
"category": "external",
"summary": "https://go.dev/cl/804261",
"url": "https://go.dev/cl/804261"
},
{
"category": "external",
"summary": "https://go.dev/issue/80528",
"url": "https://go.dev/issue/80528"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/94pEornpRlI",
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},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-6090",
"url": "https://pkg.go.dev/vuln/GO-2026-6090"
}
],
"release_date": "2026-08-13T21:58:53.216000+00:00",
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{
"category": "vendor_fix",
"date": "2026-09-10T08:49:18+00:00",
"details": "Before installing the operator, make sure all previously released errata relevant to your system have been applied.\n\nThe steps to apply the upgraded images will differ depending on the installation plan approval policy that will be used\nwhile installing the external secrets operator for Red Hat OpenShift.\n\n- If the approval policy is set to `Automatic`, then the Operator will be upgraded automatically when there is a\nnew version of the Operator. No further action is required to upgrade. This is the default setting.\n\n- If you changed the approval policy to `Manual`, then you must manually approve the upgrade to the Operator.",
"product_ids": [
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],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:66363"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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]
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],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages"
},
{
"cve": "CVE-2026-71556",
"cwe": {
"id": "CWE-59",
"name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
},
"discovery_date": "2026-08-07T16:51:14.251077+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2512562"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in go-git, an extensible Git implementation library. Worktree operations, such as checkout, status, and add, resolve symbolic links within the working tree without proper boundary confinement. This allows a remote attacker to craft a malicious repository containing a symlink, which, when cloned and its worktree operations are used, can lead to reading from or writing to arbitrary files outside the intended working directory. This could result in information disclosure or arbitrary file modification.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "github.com/go-git/go-git/v5: go-git: Arbitrary file read/write via symbolic link resolution",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "go-git is a pure-Go implementation of Git. During worktree operations (checkout, status, add), go-git resolves symbolic links without confining resolution to the worktree boundary, so a maliciously crafted repository containing a symlink can cause a consuming application to read from or write to files outside the intended working directory when that repository is cloned and its worktree operations are used. Exploitation requires the application to clone an attacker-controlled repository and then perform worktree operations against it; applications that only process trusted repositories are not exposed. Red Hat rates the impact of this flaw as Important.",
"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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},
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},
{
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},
{
"category": "external",
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}
],
"release_date": "2026-08-07T16:37:40.058000+00:00",
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],
"restart_required": {
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},
"url": "https://access.redhat.com/errata/RHSA-2026:66363"
},
{
"category": "workaround",
"details": "To reduce the risk of exploitation, do not clone or run worktree operations (checkout, status, add) on Git repositories originating from untrusted or attacker-controllable sources using an affected version of go-git. The issue is resolved by updating to go-git 5.19.2 or 6.0.0-alpha.5 (or later).",
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]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L",
"version": "3.1"
},
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"external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:6603672dc04b2fbbb3e043e9180da5d83e690865cceb9680ba07c417f4385788_amd64",
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"external secrets operator for Red Hat OpenShift 1.2:registry.redhat.io/external-secrets-operator/external-secrets-rhel9@sha256:f369f5758ae02eb3bc79cdfc9067f56301e295e329dca2d24a71703582c0295a_arm64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "github.com/go-git/go-git/v5: go-git: Arbitrary file read/write via symbolic link resolution"
}
]
}
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.
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.