A flaw was found in xdgmime. A heap-based buffer overflow can be triggered in _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2 bytes, resulting in an application crash or memory corruption.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-2028 advisory.

    A flaw was found in xdgmime. A heap-based buffer overflow can be triggered in
    _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-     controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic     path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When     performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2     bytes, resulting in an application crash or memory corruption. (CVE-2026-16118)

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.

The version of webkitgtk4 installed on the remote host is prior to 2.52.5-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3843 advisory.

    A flaw was found in xdgmime. A heap-based buffer overflow can be triggered in
    _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-     controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic     path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When     performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2     bytes, resulting in an application crash or memory corruption. (CVE-2026-16118)

    The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2     and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an     unexpected process crash. (CVE-2026-39872)

    The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2     and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an     unexpected process crash. (CVE-2026-43663)

    An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in Safari     26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may     lead to an unexpected Safari crash. (CVE-2026-43676)

    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari     26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may     lead to an unexpected process crash. (CVE-2026-43699)

    The issue was addressed with improved checks. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS     26.5.2, macOS Tahoe 26.5.2. A malicious website may be able to process restricted web content outside the     sandbox. (CVE-2026-43701)

    A type confusion issue was addressed with improved checks. This issue is fixed in Safari 26.5.2, iOS     26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to     memory corruption. (CVE-2026-43705)

    A memory corruption issue was addressed with improved memory handling. This issue is fixed in Safari     26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may     lead to an unexpected process crash. (CVE-2026-43707)

    The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2     and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an     unexpected process crash. (CVE-2026-43712)

    A permissions issue was addressed with additional restrictions. This issue is fixed in Safari 26.5.2, iOS     26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Visiting a website may leak sensitive data. (CVE-2026-43713)

    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari     26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may     lead to memory corruption. (CVE-2026-43715)

    The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2     and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an     unexpected Safari crash. (CVE-2026-43716)

    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari     26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may     lead to an unexpected Safari crash. (CVE-2026-43720)

    The issue was addressed with improved input validation. This issue is fixed in Safari 26.5.2, iOS 26.5.2     and iPadOS 26.5.2, macOS Tahoe 26.5.2. A malicious website may be able to process restricted web content     outside the sandbox. (CVE-2026-43725)

    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari     26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may     lead to an unexpected process crash. (CVE-2026-43726)

    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari     26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may     lead to an unexpected Safari crash. (CVE-2026-43727)

    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari     26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may     lead to memory corruption. (CVE-2026-43731)

    A path handling issue was addressed with improved validation. This issue is fixed in Safari 26.5.2, iOS     26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may disclose     sensitive user information. (CVE-2026-43732)

    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari     26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may     lead to an unexpected process crash. (CVE-2026-43734)

    The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2     and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may result in the     disclosure of process memory. (CVE-2026-43740)

    A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari     26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may     lead to an unexpected process crash. (CVE-2026-43742)

    An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in Safari     26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may     lead to an unexpected Safari crash. (CVE-2026-43745)

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 version of glib2 installed on the remote host is prior to 2.56.1-9. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3850 advisory.

    A flaw was found in xdgmime. A heap-based buffer overflow can be triggered in
    _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-     controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic     path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When     performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2     bytes, resulting in an application crash or memory corruption. (CVE-2026-16118)

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.

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

  - A flaw was found in xdgmime. A heap-based buffer overflow can be triggered in
    _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-     controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic     path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When     performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2     bytes, resulting in an application crash or memory corruption. (CVE-2026-16118)

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

ID	Name	Product	Family	Severity
332052	Amazon Linux 2023 : glib2, glib2-devel, glib2-static (ALAS2023-2026-2028)	Nessus	Amazon Linux Local Security Checks	high
332028	Amazon Linux 2 : webkitgtk4, --advisory ALAS2-2026-3843 (ALAS-2026-3843)	Nessus	Amazon Linux Local Security Checks	high
331979	Amazon Linux 2 : glib2, --advisory ALAS2-2026-3850 (ALAS-2026-3850)	Nessus	Amazon Linux Local Security Checks	high
327697	Linux Distros Unpatched Vulnerability : CVE-2026-16118	Nessus	Misc.	high

Detections

Analytics

CVE-2026-16118

high

Tenable Plugins

high

high

high

high