RHSA-2026:24483

Vulnerability from csaf_redhat - Published: 2026-06-08 13:12 - Updated: 2026-07-22 20:59
Summary
Red Hat Security Advisory: RHTAS 1.4 - GA Release of Model Transparency 1.0.1
Severity
Important
Notes
Topic: The GA release of the RHTAS Model Transparency CLI image. For more details please visit the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4
Details: The RHTAS Model Transparency CLI image can be used to sign and verify AI/ML workloads
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2026-23490

A flaw was found in pyasn1, a generic ASN.1 library for Python. A remote attacker could exploit this vulnerability by sending a specially crafted RELATIVE-OID with excessive continuation octets. This input validation vulnerability leads to memory exhaustion, resulting in a Denial of Service (DoS) for the affected system.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-770 - Allocation of Resources Without Limits or Throttling
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:1687e39c23f2718e3b857666ba00aa7596c83810c7f43ba17170c30c95485be7_amd64 —
Vendor Fix fix
Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64 —
Vendor Fix fix
Threats
Impact Important
CVE-2026-39892

A flaw was found in the cryptography library. This vulnerability occurs when a non-contiguous buffer is passed to certain application programming interfaces (APIs) that accept Python buffers, such as Hash.update(). A remote attacker could exploit this to cause a buffer overflow, potentially leading to a denial of service.

7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE-131 - Incorrect Calculation of Buffer Size
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:1687e39c23f2718e3b857666ba00aa7596c83810c7f43ba17170c30c95485be7_amd64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-44431

A flaw was found in urllib3, an HTTP client library for Python. When using the low-level API via `ProxyManager.connection_from_url().urlopen()` with `assert_same_host=False`, cross-origin redirects can still forward sensitive headers. This could allow a remote attacker to gain unauthorized access to sensitive information.

5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-201 - Insertion of Sensitive Information Into Sent Data
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:1687e39c23f2718e3b857666ba00aa7596c83810c7f43ba17170c30c95485be7_amd64 —
Vendor Fix fix
Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64 —
Vendor Fix fix
Threats
Impact Moderate
CVE-2026-44432

A flaw was found in urllib3, an HTTP client library for Python. This vulnerability allows a remote attacker to cause excessive resource consumption, such as high CPU usage and massive memory allocation, on the client side. This occurs when urllib3 attempts to decompress an entire HTTP response, even if only a partial read was requested, or when draining the connection after a partial decompression. This can lead to a Denial of Service (DoS) condition.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:1687e39c23f2718e3b857666ba00aa7596c83810c7f43ba17170c30c95485be7_amd64 —
Vendor Fix fix
Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64 —
Vendor Fix fix
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:24483 self
https://access.redhat.com/documentation/en-us/red… external
https://access.redhat.com/documentation/en-us/red… external
https://access.redhat.com/security/cve/CVE-2026-23490 external
https://access.redhat.com/security/cve/CVE-2026-39892 external
https://access.redhat.com/security/cve/CVE-2026-44431 external
https://access.redhat.com/security/cve/CVE-2026-44432 external
https://access.redhat.com/security/updates/classi… external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-23490 self
https://bugzilla.redhat.com/show_bug.cgi?id=2430472 external
https://www.cve.org/CVERecord?id=CVE-2026-23490 external
https://nvd.nist.gov/vuln/detail/CVE-2026-23490 external
https://github.com/pyasn1/pyasn1/commit/3908f1442… external
https://github.com/pyasn1/pyasn1/releases/tag/v0.6.2 external
https://github.com/pyasn1/pyasn1/security/advisor… external
https://access.redhat.com/security/cve/CVE-2026-39892 self
https://bugzilla.redhat.com/show_bug.cgi?id=2456735 external
https://www.cve.org/CVERecord?id=CVE-2026-39892 external
https://nvd.nist.gov/vuln/detail/CVE-2026-39892 external
http://www.openwall.com/lists/oss-security/2026/0… external
https://github.com/pyca/cryptography/commit/622d6… external
https://github.com/pyca/cryptography/security/adv… external
https://access.redhat.com/security/cve/CVE-2026-44431 self
https://bugzilla.redhat.com/show_bug.cgi?id=2477167 external
https://www.cve.org/CVERecord?id=CVE-2026-44431 external
https://nvd.nist.gov/vuln/detail/CVE-2026-44431 external
https://github.com/urllib3/urllib3/security/advis… external
https://access.redhat.com/security/cve/CVE-2026-44432 self
https://bugzilla.redhat.com/show_bug.cgi?id=2477154 external
https://www.cve.org/CVERecord?id=CVE-2026-44432 external
https://nvd.nist.gov/vuln/detail/CVE-2026-44432 external
https://github.com/urllib3/urllib3/security/advis… external
To clipboard 

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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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        },
        {
          "category": "summary",
          "text": "cryptography: Cryptography: Buffer overflow via non-contiguous buffer in API",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "In default configurations Red Hat products isolate service processes from total system access. Should an attacker be able to exploit this vulnerability their impact will be limited to that service account and they will not have access to the broader system.",
          "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": {
        "fixed": [
          "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:1687e39c23f2718e3b857666ba00aa7596c83810c7f43ba17170c30c95485be7_amd64",
          "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-39892"
        },
        {
          "category": "external",
          "summary": "RHBZ#2456735",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456735"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-39892",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-39892"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39892",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39892"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2026/04/08/12",
          "url": "http://www.openwall.com/lists/oss-security/2026/04/08/12"
        },
        {
          "category": "external",
          "summary": "https://github.com/pyca/cryptography/commit/622d672e429a7cff836a23c5903683dbec1901f5",
          "url": "https://github.com/pyca/cryptography/commit/622d672e429a7cff836a23c5903683dbec1901f5"
        },
        {
          "category": "external",
          "summary": "https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq",
          "url": "https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq"
        }
      ],
      "release_date": "2026-04-08T20:49:41.967000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-08T13:12:26+00:00",
          "details": "The Model Transparency CLI Image is a containerized command-line tool for signing and verifying AI/ML workloads against a private Red Hat Trusted Artifact Signer (RHTAS) instance. It lets teams create signatures and attestations for model artifacts and validate them at build or deploy time using enterprise trust material (e.g., Fulcio/Rekor).\n\nFor details on using the Model Transparency CLI image, refer to the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4\n\nYou can find the release notes for this version of Red Hat Trusted Artifact Signer at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4/html-single/release_notes/index",
          "product_ids": [
            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:1687e39c23f2718e3b857666ba00aa7596c83810c7f43ba17170c30c95485be7_amd64",
            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:24483"
        },
        {
          "category": "workaround",
          "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": [
            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:1687e39c23f2718e3b857666ba00aa7596c83810c7f43ba17170c30c95485be7_amd64",
            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64"
          ]
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:1687e39c23f2718e3b857666ba00aa7596c83810c7f43ba17170c30c95485be7_amd64",
            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "cryptography: Cryptography: Buffer overflow via non-contiguous buffer in API"
    },
    {
      "cve": "CVE-2026-44431",
      "cwe": {
        "id": "CWE-201",
        "name": "Insertion of Sensitive Information Into Sent Data"
      },
      "discovery_date": "2026-05-13T17:01:41.663622+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2477167"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in urllib3, an HTTP client library for Python. When using the low-level API via `ProxyManager.connection_from_url().urlopen()` with `assert_same_host=False`, cross-origin redirects can still forward sensitive headers. This could allow a remote attacker to gain unauthorized access to sensitive information.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "urllib3: urllib3: Information disclosure via cross-origin redirects forwarding sensitive headers",
          "title": "Vulnerability summary"
        },
        {
          "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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          "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64"
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-44431"
        },
        {
          "category": "external",
          "summary": "RHBZ#2477167",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477167"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-44431",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-44431"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-44431",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44431"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/security/advisories/GHSA-qccp-gfcp-xxvc",
          "url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-qccp-gfcp-xxvc"
        }
      ],
      "release_date": "2026-05-13T15:20:24.588000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-08T13:12:26+00:00",
          "details": "The Model Transparency CLI Image is a containerized command-line tool for signing and verifying AI/ML workloads against a private Red Hat Trusted Artifact Signer (RHTAS) instance. It lets teams create signatures and attestations for model artifacts and validate them at build or deploy time using enterprise trust material (e.g., Fulcio/Rekor).\n\nFor details on using the Model Transparency CLI image, refer to the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4\n\nYou can find the release notes for this version of Red Hat Trusted Artifact Signer at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4/html-single/release_notes/index",
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            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64"
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          "restart_required": {
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          },
          "url": "https://access.redhat.com/errata/RHSA-2026:24483"
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      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:1687e39c23f2718e3b857666ba00aa7596c83810c7f43ba17170c30c95485be7_amd64",
            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64"
          ]
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "urllib3: urllib3: Information disclosure via cross-origin redirects forwarding sensitive headers"
    },
    {
      "cve": "CVE-2026-44432",
      "cwe": {
        "id": "CWE-409",
        "name": "Improper Handling of Highly Compressed Data (Data Amplification)"
      },
      "discovery_date": "2026-05-13T17:01:01.083841+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2477154"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in urllib3, an HTTP client library for Python. This vulnerability allows a remote attacker to cause excessive resource consumption, such as high CPU usage and massive memory allocation, on the client side. This occurs when urllib3 attempts to decompress an entire HTTP response, even if only a partial read was requested, or when draining the connection after a partial decompression. This can lead to a Denial of Service (DoS) condition.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "urllib3: urllib3: Denial of Service due to excessive HTTP response decompression",
          "title": "Vulnerability summary"
        },
        {
          "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"
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      ],
      "product_status": {
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-44432"
        },
        {
          "category": "external",
          "summary": "RHBZ#2477154",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477154"
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        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-44432",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-44432"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-44432",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44432"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/security/advisories/GHSA-mf9v-mfxr-j63j",
          "url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-mf9v-mfxr-j63j"
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      "release_date": "2026-05-13T15:17:12.611000+00:00",
      "remediations": [
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          "date": "2026-06-08T13:12:26+00:00",
          "details": "The Model Transparency CLI Image is a containerized command-line tool for signing and verifying AI/ML workloads against a private Red Hat Trusted Artifact Signer (RHTAS) instance. It lets teams create signatures and attestations for model artifacts and validate them at build or deploy time using enterprise trust material (e.g., Fulcio/Rekor).\n\nFor details on using the Model Transparency CLI image, refer to the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4\n\nYou can find the release notes for this version of Red Hat Trusted Artifact Signer at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4/html-single/release_notes/index",
          "product_ids": [
            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:1687e39c23f2718e3b857666ba00aa7596c83810c7f43ba17170c30c95485be7_amd64",
            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64"
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          "restart_required": {
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      "scores": [
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            "attackVector": "NETWORK",
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            "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",
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            "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/model-transparency-rhel9@sha256:88a0ea22cfa6999d4799dce220608e10369ebe5f77bc27e8f1cf57330ee3796e_arm64"
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      "title": "urllib3: urllib3: Denial of Service due to excessive HTTP response decompression"
    }
  ]
}



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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.