When doing TLS related transfers with reused easy or multi handles and altering the `CURLSSLOPT_NO_PARTIALCHAIN` option, libcurl could accidentally reuse a CA store cached in memory for which the partial chain option was reversed. Contrary to the user's wishes and expectations. This could make libcurl find and accept a trust chain that it otherwise would not.

Multiple Vulnerabilities in Curl

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0066-1 advisory.

    - CVE-2025-14524: Fixed bearer token leak on cross-protocol redirect (bsc#1255731)
      - CVE-2025-15079: Fixed unknown host connection acceptance when set in the global knownhostsfile     (bsc#1255733)
      - CVE-2025-14819: Fixed issue where alteration of CURLSSLOPT_NO_PARTIALCHAIN could       accidentally lead to CA cache reuse for which partial chain was reversed (bsc#1255732)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0052-1 advisory.

    - CVE-2025-14524: bearer token leak on cross-protocol redirect (bsc#1255731).
    - CVE-2025-14819: libssh global knownhost override (bsc#1255732).
    - CVE-2025-15079: libssh key passphrase bypass without agent set (bsc#1255733).
    - CVE-2025-15224: OpenSSL partial chain store policy bypass (bsc#1255734).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0050-1 advisory.

    - CVE-2025-14524: bearer token leak on cross-protocol redirect (bsc#1255731).
    - CVE-2025-14819: libssh global knownhost override (bsc#1255732).
    - CVE-2025-15079: libssh key passphrase bypass without agent set (bsc#1255733).
    - CVE-2025-15224: OpenSSL partial chain store policy bypass (bsc#1255734).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of curl installed on the remote host is prior to 8.17.0 / 8.18.0. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2026-007-01 advisory.

    New curl packages are available for Slackware 15.0 and -current to fix security issues.

Tenable has extracted the preceding description block directly from the curl security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - When doing TLS related transfers with reused easy or multi handles and altering the     `CURLSSLOPT_NO_PARTIALCHAIN` option, libcurl could accidentally reuse a CA store cached in memory for     which the partial chain option was reversed. Contrary to the user's wishes and expectations. This could     make libcurl find and accept a trust chain that it otherwise would not. (CVE-2025-14819)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
282494	SUSE SLES12 Security Update : curl (SUSE-SU-2026:0066-1)	Nessus	SuSE Local Security Checks	medium
282450	SUSE SLED15 / SLES15 Security Update : curl (SUSE-SU-2026:0052-1)	Nessus	SuSE Local Security Checks	medium
282448	openSUSE 15 Security Update : curl (SUSE-SU-2026:0050-1)	Nessus	SuSE Local Security Checks	medium
282347	Slackware Linux 15.0 / current curl Multiple Vulnerabilities (SSA:2026-007-01)	Nessus	Slackware Local Security Checks	critical
282311	Linux Distros Unpatched Vulnerability : CVE-2025-14819	Nessus	Misc.	medium

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