RHSA-2026:10140

Vulnerability from csaf_redhat - Published: 2026-04-23 13:34 - Updated: 2026-11-12 23:07
Summary
Red Hat Security Advisory: Red Hat Enterprise Linux AI 3.3.1
Severity
Important
Notes
Topic: Red Hat Enterprise Linux AI 3.3.1 is now available.
Details: Red Hat® Enterprise Linux® AI is a foundation model platform to seamlessly develop, test, and run Granite family large language models (LLMs) for enterprise applications.
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-2026-4519

A flaw was found in Python. The `webbrowser.open()` API, used to launch web browsers, does not properly sanitize input. This allows a remote attacker to craft a malicious URL containing leading dashes. When such a URL is opened, certain web browsers may interpret these dashes as command-line options, which could lead to unexpected behavior, information disclosure, or potentially arbitrary code execution, impacting the integrity of the system.

7.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
CWE-88 - Improper Neutralization of Argument Delimiters in a Command
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-aws-cuda-rhel9@sha256:c4e99fdf145fa920e4d91f291010fe0826306112c55f8470c67b060b6235e58f_amd64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-azure-cuda-rhel9@sha256:bffbcba6080e3e3034581301575ce3211a8351ff560029426c6723ea06229430_amd64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-azure-rocm-rhel9@sha256:e288f64fd5bfeb9f94ae40c346cf6a77ae09cb639440494d36db9be9962035d6_amd64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-cuda-rhel9@sha256:080632b93a8171a88c7a17ddb8dc5f1cc7801da604aae599eac28861b5b38821_amd64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-cuda-rhel9@sha256:a6e60bde307c0d6fb5fa8c115d13169287ec851ef2f3c440da3df7a9089a8f63_arm64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-gcp-cuda-rhel9@sha256:b0f5035af6217c92086ae77c07f36742f31b2b36f5a24a70f801cd9ff181a264_amd64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-rocm-rhel9@sha256:59b3ca83b219cadb030d5b4805e505ad6bfa19e1a0f2130f646b2ba7e0b8394c_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-4786

A flaw was found in the Python webbrowser.open() API. If a specially crafted URL containing "%action" is processed, an attacker could bypass a previous mitigation for CVE-2026-4519. This bypass allows for command injection into the underlying shell, potentially leading to arbitrary code execution.

7.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
CWE-88 - Improper Neutralization of Argument Delimiters in a Command
Affected products
Fixed 7 products, the same list as for CVE-2026-4519
Threats
Impact Important
CVE-2026-6100

A flaw was found in Python's decompression modules, including `lzma.LZMADecompressor`, `bz2.BZ2Decompressor`, and `gzip.GzipFile`. This vulnerability, a use-after-free, can occur if a program attempts to re-use a decompression object after a memory allocation error, especially when the system is experiencing high memory usage. Exploitation of this flaw could potentially allow an attacker to execute arbitrary code or access sensitive data. The vulnerability is only present if the program re-uses decompressor instances across multiple decompression calls even after a `MemoryError` is raised during decompression. Using the helper functions to one-shot decompress data such as `lzma.decompress()`, `bz2.decompress()`, `gzip.decompress()`, and `zlib.decompress()` are not affected as a new decompressor instance is used per call. If the decompressor instance is not re-used after an error condition, this usage is similarly not vulnerable.

8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 7 products, the same list as for CVE-2026-4519
Threats
Impact Important
CVE-2026-25679

The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1286 - Improper Validation of Syntactic Correctness of Input
Affected products
Fixed 7 products, the same list as for CVE-2026-4519
Threats
Impact Important
CVE-2026-27893

A flaw was found in vLLM, an inference and serving engine for large language models (LLMs). Two model implementation files hardcode `trust_remote_code=True` when loading sub-components. This bypasses the user's explicit `--trust-remote-code=False` security opt-out, allowing a remote attacker to achieve remote code execution through malicious model repositories.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-501 - Trust Boundary Violation
Affected products
Fixed 7 products, the same list as for CVE-2026-4519
Threats
Impact Important
CVE-2026-32597

A missing verification step has been discovered in PyJWT. PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 §4.1.11. When a JWS token contains a crit array listing extensions that PyJWT does not understand, the library accepts the token instead of rejecting it. This violates the MUST requirement in the RFC.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-347 - Improper Verification of Cryptographic Signature
Affected products
Fixed 7 products, the same list as for CVE-2026-4519
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:10140 self
https://access.redhat.com/security/cve/CVE-2026-25679 external
https://access.redhat.com/security/cve/CVE-2026-27893 external
https://access.redhat.com/security/cve/CVE-2026-32597 external
https://access.redhat.com/security/cve/CVE-2026-4519 external
https://access.redhat.com/security/cve/CVE-2026-4786 external
https://access.redhat.com/security/cve/CVE-2026-6100 external
https://access.redhat.com/security/updates/classi… external
https://www.redhat.com/en/technologies/linux-plat… external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-4519 self
https://bugzilla.redhat.com/show_bug.cgi?id=2449649 external
https://www.cve.org/CVERecord?id=CVE-2026-4519 external
https://nvd.nist.gov/vuln/detail/CVE-2026-4519 external
https://github.com/python/cpython/issues/143930 external
https://github.com/python/cpython/pull/143931 external
https://mail.python.org/archives/list/security-an… external
https://access.redhat.com/security/cve/CVE-2026-4786 self
https://bugzilla.redhat.com/show_bug.cgi?id=2458049 external
https://www.cve.org/CVERecord?id=CVE-2026-4786 external
https://nvd.nist.gov/vuln/detail/CVE-2026-4786 external
https://github.com/python/cpython/issues/148169 external
https://github.com/python/cpython/pull/148170 external
https://mail.python.org/archives/list/security-an… external
https://access.redhat.com/security/cve/CVE-2026-6100 self
https://bugzilla.redhat.com/show_bug.cgi?id=2457932 external
https://www.cve.org/CVERecord?id=CVE-2026-6100 external
https://nvd.nist.gov/vuln/detail/CVE-2026-6100 external
https://github.com/python/cpython/commit/6a5f79c8… external
https://github.com/python/cpython/commit/8fc66aef… external
https://github.com/python/cpython/commit/c3cf71c3… external
https://github.com/python/cpython/issues/148395 external
https://github.com/python/cpython/pull/148396 external
https://mail.python.org/archives/list/security-an… external
https://access.redhat.com/security/cve/CVE-2026-25679 self
https://bugzilla.redhat.com/show_bug.cgi?id=2445356 external
https://www.cve.org/CVERecord?id=CVE-2026-25679 external
https://nvd.nist.gov/vuln/detail/CVE-2026-25679 external
https://go.dev/cl/752180 external
https://go.dev/issue/77578 external
https://groups.google.com/g/golang-announce/c/Edh… external
https://pkg.go.dev/vuln/GO-2026-4601 external
https://access.redhat.com/security/cve/CVE-2026-27893 self
https://bugzilla.redhat.com/show_bug.cgi?id=2452055 external
https://www.cve.org/CVERecord?id=CVE-2026-27893 external
https://nvd.nist.gov/vuln/detail/CVE-2026-27893 external
https://github.com/vllm-project/vllm/commit/00bd0… external
https://github.com/vllm-project/vllm/pull/36192 external
https://github.com/vllm-project/vllm/security/adv… external
https://access.redhat.com/security/cve/CVE-2026-32597 self
https://bugzilla.redhat.com/show_bug.cgi?id=2447194 external
https://www.cve.org/CVERecord?id=CVE-2026-32597 external
https://nvd.nist.gov/vuln/detail/CVE-2026-32597 external
https://github.com/jpadilla/pyjwt/security/adviso… external
To clipboard 

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    },
    {
      "cve": "CVE-2026-6100",
      "cwe": {
        "id": "CWE-825",
        "name": "Expired Pointer Dereference"
      },
      "discovery_date": "2026-04-13T18:01:31.970255+00:00",
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2457932"
        }
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        {
          "category": "description",
          "text": "A flaw was found in Python\u0027s decompression modules, including `lzma.LZMADecompressor`, `bz2.BZ2Decompressor`, and `gzip.GzipFile`. This vulnerability, a use-after-free, can occur if a program attempts to re-use a decompression object after a memory allocation error, especially when the system is experiencing high memory usage. Exploitation of this flaw could potentially allow an attacker to execute arbitrary code or access sensitive data. The vulnerability is only present if the program re-uses decompressor instances across multiple decompression calls even after a `MemoryError` is raised during decompression. Using the helper functions to one-shot decompress data such as `lzma.decompress()`, `bz2.decompress()`, `gzip.decompress()`, and `zlib.decompress()` are not affected as a new decompressor instance is used per call. If the decompressor instance is not re-used after an error condition, this usage is similarly not vulnerable.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "python: Python: Arbitrary code execution or information disclosure via use-after-free in decompression modules",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The severity of this flaw is somewhat mitigated on Red Hat platforms. By default processes are not executed with root user privilege and are limited in their scope which in turn limits the impact of this flaw.",
          "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"
        }
      ],
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        {
          "category": "external",
          "summary": "https://mail.python.org/archives/list/security-announce@python.org/thread/HTWB2Z6KT5QQX4RYEZAFININDHNOSIF3/",
          "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/HTWB2Z6KT5QQX4RYEZAFININDHNOSIF3/"
        }
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      "release_date": "2026-04-13T17:15:47.606000+00:00",
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    },
    {
      "cve": "CVE-2026-25679",
      "cwe": {
        "id": "CWE-1286",
        "name": "Improper Validation of Syntactic Correctness of Input"
      },
      "discovery_date": "2026-03-06T22:02:11.567841+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2445356"
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          "text": "The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "net/url: Incorrect parsing of IPv6 host literals in net/url",
          "title": "Vulnerability summary"
        },
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          "category": "other",
          "text": "Red Hat evaluates this vulnerability as having an Important severity because unauthenticated remote attackers can target exposed Go services over the network to trigger severe denial-of-service conditions or validation discrepancies without requiring elevated privileges. Across standard Red Hat environments\u2014including OpenShift Container Platform and Red Hat Enterprise Linux container tools\u2014many components rely on the core Go runtime to process user-supplied addresses and endpoints. Although improper handling of malformed host segments in web addresses can disrupt network-facing daemons, the vulnerability cannot be leveraged for arbitrary code execution or data leakage, keeping the risk bounded within the Important classification.",
          "title": "Statement"
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        {
          "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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        "id": "CWE-501",
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          "title": "Vulnerability description"
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          "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.",
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      "cwe": {
        "id": "CWE-347",
        "name": "Improper Verification of Cryptographic Signature"
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      "discovery_date": "2026-03-12T22:01:29.967713+00:00",
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          "text": "2447194"
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          "text": "A missing verification step has been discovered in PyJWT. PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 \u00a74.1.11. When a JWS token contains a crit array listing extensions that PyJWT does not understand, the library accepts the token instead of rejecting it. This violates the MUST requirement in the RFC.",
          "title": "Vulnerability description"
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          "text": "An IMPORTANT severity flaw was found in PyJWT, a Python JSON Web Token (JWT) library shipped in a broad set of Red Hat products, including Red Hat Ansible Automation Platform, Red Hat Enterprise Linux, Red Hat OpenShift AI and Red Hat AI Inference Server components, and Red Hat Quay. PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 section 4.1.11: when a JSON Web Signature (JWS) token contains a crit array listing header extensions that PyJWT does not understand, the library accepts the token instead of rejecting it, violating a MUST requirement of the RFC. As a result, a remote attacker who can submit crafted tokens to an application that relies on PyJWT for JWT verification can have tokens carrying unrecognized critical header extensions accepted, undermining the integrity of the token validation the application depends on. Red Hat has rated this flaw as IMPORTANT with a CVSS 3.1 score of 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N), consistent with the upstream severity. Affected Red Hat product streams are tracked with a delegated resolution, and fixes are being pursued by the responsible product teams.",
          "title": "Statement"
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          "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.",
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          },
          "url": "https://access.redhat.com/errata/RHSA-2026:10140"
        },
        {
          "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 Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-aws-cuda-rhel9@sha256:c4e99fdf145fa920e4d91f291010fe0826306112c55f8470c67b060b6235e58f_amd64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-azure-cuda-rhel9@sha256:bffbcba6080e3e3034581301575ce3211a8351ff560029426c6723ea06229430_amd64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-azure-rocm-rhel9@sha256:e288f64fd5bfeb9f94ae40c346cf6a77ae09cb639440494d36db9be9962035d6_amd64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-cuda-rhel9@sha256:080632b93a8171a88c7a17ddb8dc5f1cc7801da604aae599eac28861b5b38821_amd64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-cuda-rhel9@sha256:a6e60bde307c0d6fb5fa8c115d13169287ec851ef2f3c440da3df7a9089a8f63_arm64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-gcp-cuda-rhel9@sha256:b0f5035af6217c92086ae77c07f36742f31b2b36f5a24a70f801cd9ff181a264_amd64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-rocm-rhel9@sha256:59b3ca83b219cadb030d5b4805e505ad6bfa19e1a0f2130f646b2ba7e0b8394c_amd64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-aws-cuda-rhel9@sha256:c4e99fdf145fa920e4d91f291010fe0826306112c55f8470c67b060b6235e58f_amd64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-azure-cuda-rhel9@sha256:bffbcba6080e3e3034581301575ce3211a8351ff560029426c6723ea06229430_amd64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-azure-rocm-rhel9@sha256:e288f64fd5bfeb9f94ae40c346cf6a77ae09cb639440494d36db9be9962035d6_amd64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-cuda-rhel9@sha256:080632b93a8171a88c7a17ddb8dc5f1cc7801da604aae599eac28861b5b38821_amd64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-cuda-rhel9@sha256:a6e60bde307c0d6fb5fa8c115d13169287ec851ef2f3c440da3df7a9089a8f63_arm64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-gcp-cuda-rhel9@sha256:b0f5035af6217c92086ae77c07f36742f31b2b36f5a24a70f801cd9ff181a264_amd64",
            "Red Hat Enterprise Linux AI 3.3:registry.redhat.io/rhelai3/bootc-rocm-rhel9@sha256:59b3ca83b219cadb030d5b4805e505ad6bfa19e1a0f2130f646b2ba7e0b8394c_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "pyjwt: PyJWT accepts unknown `crit` header extensions (RFC 7515 \u00a74.1.11 MUST violation)"
    }
  ]
}



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Sightings

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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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.