RHSA-2026:19106

Vulnerability from csaf_redhat - Published: 2026-05-19 13:46 - Updated: 2026-07-28 13:59
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: curl: * curl-8.20.0-2.hum1 (aarch64, x86_64) * libcurl-8.20.0-2.hum1 (aarch64, x86_64) * libcurl-devel-8.20.0-2.hum1 (aarch64, x86_64) * libcurl-minimal-8.20.0-2.hum1 (aarch64, x86_64) * curl-8.20.0-2.hum1.src (src)
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-2026-7009

A flaw was found in curl. When curl is configured to use the Certificate Status Request TLS (Transport Layer Security) extension, also known as OCSP (Online Certificate Status Protocol) stapling, it fails to properly detect issues with the OCSP response. This can lead curl to incorrectly validate a server certificate as legitimate, potentially allowing an attacker to bypass certificate validation and establish a connection to a malicious server.

5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE-295 - Improper Certificate Validation
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:curl-main@aarch64 —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:curl-main@src —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:curl-main@x86_64 —
Vendor Fix fix
Threats
Impact Moderate
CVE-2026-7168

A flaw was found in libcurl. When a user performs a transfer over an HTTP proxy using Digest authentication and then reuses the same handle for a second transfer with a different proxy host, libcurl incorrectly sends the `Proxy-Authorization` header intended for the first proxy to the second proxy. This could lead to the disclosure of sensitive authentication information to an unintended proxy, potentially allowing an attacker to gain unauthorized access or impersonate the user.

5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE-201 - Insertion of Sensitive Information Into Sent Data
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:curl-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:curl-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:curl-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
References
To clipboard 

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        "text": "This update includes the following RPMs:\n\ncurl:\n  * curl-8.20.0-2.hum1 (aarch64, x86_64)\n  * libcurl-8.20.0-2.hum1 (aarch64, x86_64)\n  * libcurl-devel-8.20.0-2.hum1 (aarch64, x86_64)\n  * libcurl-minimal-8.20.0-2.hum1 (aarch64, x86_64)\n  * curl-8.20.0-2.hum1.src (src)",
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      "discovery_date": "2026-05-13T10:01:08.914459+00:00",
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          "text": "A flaw was found in curl. When curl is configured to use the Certificate Status Request TLS (Transport Layer Security) extension, also known as OCSP (Online Certificate Status Protocol) stapling, it fails to properly detect issues with the OCSP response. This can lead curl to incorrectly validate a server certificate as legitimate, potentially allowing an attacker to bypass certificate validation and establish a connection to a malicious server.",
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          "title": "Vulnerability description"
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          "text": "curl: libcurl: Information disclosure via incorrect Proxy-Authorization header reuse",
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          "text": "Moderate: A flaw in libcurl allows for information disclosure when a client reuses a handle for HTTP proxy transfers. If a libcurl application uses Digest authentication with one proxy and then connects to a different proxy using the same handle, the `Proxy-Authorization` header from the initial connection may be inadvertently sent to the second proxy, potentially exposing sensitive authentication data.",
          "title": "Statement"
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            "baseScore": 5.3,
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          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "curl: libcurl: Information disclosure via incorrect Proxy-Authorization header reuse"
    }
  ]
}



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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

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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.
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  • 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.