zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1608 advisory.

    A flaw was found in zlib. An attacker providing specially crafted input to the crc32_combine64 or     crc32_combine_gen64 functions could trigger an infinite loop within the x2nmodp function. This leads to     excessive CPU consumption, which can result in a Denial of Service (DoS) for the affected system.
    (CVE-2026-27171)

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

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1616 advisory.

    A flaw was found in zlib. An attacker providing specially crafted input to the crc32_combine64 or     crc32_combine_gen64 functions could trigger an infinite loop within the x2nmodp function. This leads to     excessive CPU consumption, which can result in a Denial of Service (DoS) for the affected system.
    (CVE-2026-27171)

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

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1609 advisory.

    @isaacs/brace-expansion is a hybrid CJS/ESM TypeScript fork of brace-expansion. Prior to version 5.0.1,     @isaacs/brace-expansion is vulnerable to a denial of service (DoS) issue caused by unbounded brace range     expansion. When an attacker provides a pattern containing repeated numeric brace ranges, the library     attempts to eagerly generate every possible combination synchronously. Because the expansion grows     exponentially, even a small input can consume excessive CPU and memory and may crash the Node.js process.
    This issue has been patched in version 5.0.1. (CVE-2026-25547)

    A flaw was found in zlib. An attacker providing specially crafted input to the crc32_combine64 or     crc32_combine_gen64 functions could trigger an infinite loop within the x2nmodp function. This leads to     excessive CPU consumption, which can result in a Denial of Service (DoS) for the affected system.
    (CVE-2026-27171)

    node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a     hardlink that points outside the extraction directory by using a drive-relative link target such as     C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This issue has     been patched in version 7.5.10. (CVE-2026-29786)

Tenable has extracted the preceding description block directly from the tested product 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 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:0783-1 advisory.

    This update for zlib fixes the following issue:

    - CVE-2026-27171: Fixed infinite loop via the `crc32_combine64` and `crc32_combine_gen64` functions due to     missing       checks for negative lengths (bsc#1258392).

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

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

The version of CBL-Mariner Releases installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2026-27171 advisory.

  - zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can     do right shifts within a loop that has no termination condition. (CVE-2026-27171)

Note that Nessus has not tested for this issue 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.

  - zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can     do right shifts within a loop that has no termination condition. (CVE-2026-27171)

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

ID	Name	Product	Family	Severity
311342	Amazon Linux 2023 : nodejs20, nodejs20-devel, nodejs20-full-i18n (ALAS2023-2026-1608)	Nessus	Amazon Linux Local Security Checks	medium
311331	Amazon Linux 2023 : nodejs22, nodejs22-devel, nodejs22-full-i18n (ALAS2023-2026-1616)	Nessus	Amazon Linux Local Security Checks	medium
311307	Amazon Linux 2023 : nodejs24, nodejs24-devel, nodejs24-full-i18n (ALAS2023-2026-1609)	Nessus	Amazon Linux Local Security Checks	critical
300990	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : zlib (SUSE-SU-2026:0783-1)	Nessus	SuSE Local Security Checks	medium
299791	Azure Linux 3.0 Security Update: CBL-Mariner Releases (CVE-2026-27171)	Nessus	Azure Linux Local Security Checks	medium
299392	Linux Distros Unpatched Vulnerability : CVE-2026-27171	Nessus	Misc.	medium

Detections

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CVE-2026-27171

medium

Tenable Plugins

medium

medium

critical

medium

medium

medium