When calling base64.b64decode() or related functions the decoding process would stop after encountering the first padded quad regardless of whether there was more information to be processed. This can lead to data being accepted which may be processed differently by other implementations. Use "validate=True" to enable stricter processing of base64 data.

amazon_alas ALAS2023-2026-1933: Amazon Linux 2023 Security Advisory:ALAS2023-2026-1933

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:2723-1 advisory.

    Security issues fixed:

    - CVE-2026-3446: base64 decoding stops at first padded quad by default and ignores other information that     could be       processed (bsc#1261970).

    Other updates and bugfixes:

    - Rewrite structure of Python interpreter packages. `python3*` symbols should be now provided by real     `python3`       packages and its subpackages instead of the virtual provides (bsc#1258364).

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 remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2664-1 advisory.

    This update for python, python-base, python-doc fixes the following issues

    Security fixes:

    - CVE-2026-1703: files may be extracted outside the installation directory when installing and extracting     maliciously       crafted wheel archives (bsc#1257599).
    - CVE-2026-3219: pip doesn't reject concatenated ZIP (bsc#1262429).
    - CVE-2026-3446: Base64 decoding stops at first padded quad by default (bsc#1261970).
    - CVE-2026-4786: Incomplete mitigation of %action expansion for command injection to webbrowser.open()     (bsc#1262319).
    - CVE-2026-6019: BaseCookie.js_output() does not neutralize embedded characters (bsc#1262654).
    - CVE-2026-6100: Arbitrary code execution or information disclosure via use-after-free in decompression     modules       (bsc#1262098).
    - CVE-2026-6357: pip self-update functionality can import newly installed modules after wheel installation       (bsc#1263442).

    Other fixes:

    - For SLE-12 use vendored libffi (bsc#1261652).

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 SLES12 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2026:2655-1 advisory.

    - CVE-2026-3446: Base64 decoding stops at first padded quad by default (bsc#1261970).

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 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-2026:2464-1 advisory.

    This update for python313 fixes the following issues

    Security issues:

    - CVE-2026-1502: HTTP client proxy tunnel headers not validated for CR/LF (bsc#1261969).
    - CVE-2026-3446: Base64 decoding stops at first padded quad by default (bsc#1261970).
    - CVE-2026-4786: [oss-security][] CPython: Incomplete mitigation of , %action expansion for command     injection to       webbrowser.open() (bsc#1262319).
    - CVE-2026-6019: `BaseCookie.js_output()` does not neutralize characters in cookie values embedded in JS     (bsc#1262654).
    - CVE-2026-6100: Arbitrary code execution or information disclosure via use-after-free in decompression     modules       (bsc#1262098).

    Non security issue:

    - Add missing BR `crypto-policies-scripts` (need for the fix of bsc#1211301).

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 a vulnerability as referenced in the SUSE-SU-2026:2298-1 advisory.

    - CVE-2026-3446: Base64 decoding stops at first padded quad by default (bsc#1261970).

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 remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1947-1 advisory.

    This update for python310 fixes the following issues

    Security issues:

    - CVE-2026-1502: HTTP client proxy tunnel headers not validated for CR/LF (bsc#1261969).
    - CVE-2026-3446: base64 decoding stops at first padded quad by default (bsc#1261970).
    - CVE-2026-4786: incomplete mitigation of , %action expansion for command injection to       webbrowser.open() (bsc#1262319).
    - CVE-2026-6019: `BaseCookie.js_output()` does not neutralize characters in cookie values embedded in JS     (bsc#1262654).
    - CVE-2026-6100: arbitrary code execution or information disclosure via use-after-free in decompression     modules       (bsc#1262098).

    Non security issue:

    - Conflicts between different versions of Python (bsc#1258364).

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 SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1937-1 advisory.

    This update for python3 fixes the following issue:

    - CVE-2026-1502: HTTP client proxy tunnel headers not validated for CR/LF (bsc#1261969).
    - CVE-2026-3446: base64 decoding stops at first padded quad by default and ignores other information that     could be       processed (bsc#1261970).
    - CVE-2026-4786: URLs prefixed with `%action` can pass the dash-prefix safety check and allow for command     injection       (bsc#1262319).
    - CVE-2026-6019: `BaseCookie.js_output()` does not neutralize characters in cookie values embedded in JS     (bsc#1262654).
    - CVE-2026-6100: use-after-free in `lzma.LZMADecompressor`, `bz2.BZ2Decompressor`, and `gzip.GzipFile`     when process is       under memory pressure(bsc#1262098).

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 SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1818-1 advisory.

    Security issues fixed:

    - CVE-2026-1502: HTTP client proxy tunnel headers not validated for CR/LF (bsc#1261969).
    - CVE-2026-3446: base64 decoding stops at first padded quad by default and ignores other information that     could be       processed (bsc#1261970).
    - CVE-2026-3479: improper resource argument validation in `pkgutil.get_data()` can lead to path traversal     (bsc#1259989).
    - CVE-2026-4786: URLs prefixed with `%action` can pass the dash-prefix safety check and allow for command     injection       (bsc#1262319).
    - CVE-2026-6019: `BaseCookie.js_output()` does not neutralize characters in cookie values embedded in JS     (bsc#1262654).
    - CVE-2026-6100: use-after-free in `lzma.LZMADecompressor`, `bz2.BZ2Decompressor`, and `gzip.GzipFile`     when process is       under memory pressure(bsc#1262098).

    Other updates and bugfixes:

    - Rewrite structure of Python interpreter packages. `python3*` symbols should be now provided by real     python3 packages       and its subpackages instead of the virtual provides (bsc#1258364).

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 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1715-1 advisory.

    - CVE-2025-13462: incorrect parsing of TarInfo when GNU long name and type AREGTYPE are combined can lead     to       misinterpretation of tar archives (bsc#1259611).
    - CVE-2026-1502: HTTP client proxy tunnel headers not validated for CR/LF (bsc#1261969).
    - CVE-2026-3446: base64 decoding stops at first padded quad by default and ignores other information that     could be       processed (bsc#1261970).
    - CVE-2026-3479: improper resource argument validation in `pkgutil.get_data()` can lead to path traversal     (bsc#1259989).
    - CVE-2026-3644: incomplete control character validation in http.cookies can lead to input validation     bypass       (bsc#1259734).
    - CVE-2026-4224: parsing XML with deeply nested DTD content models can lead to C stack overflow     (bsc#1259735).
    - CVE-2026-4519: failure to sanitize leading dashes in URLs in the `webbrowser.open()` API can lead to web     browser       command line option injection (bsc#1260026).
    - CVE-2026-4786: URLs prefixed with `%action` can pass the dash-prefix safety check and allow for command     injection       (bsc#1262319).
    - CVE-2026-6019: `BaseCookie.js_output()` does not neutralize characters in cookie values embedded in JS     (bsc#1262654).
    - CVE-2026-6100: use-after-free in `lzma.LZMADecompressor`, `bz2.BZ2Decompressor`, and `gzip.GzipFile`     when process is       under memory pressure(bsc#1262098).

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 SLES15 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2026:1503-1 advisory.

    This update for python fixes the following issue:

    - CVE-2026-3446: Base64 decoding stops at first padded quad by default (bsc#1261970).

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

  - When calling base64.b64decode() or related functions the decoding process would stop after encountering     the first padded quad regardless of whether there was more information to be processed. This can lead to     data being accepted which may be processed differently by other implementations. Use validate=True to     enable stricter processing of base64 data. (CVE-2026-3446)

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

ID	Name	Product	Family	Severity
324847	SUSE SLES15 Security Update : python311 (SUSE-SU-2026:2723-1)	Nessus	SuSE Local Security Checks	medium
323246	SUSE SLES12: libpython2_7-1_0 / libpython2_7-1_0-32bit / python / python-32bit / etc (SUSE-SU-2026:2664-1)	Nessus	SuSE Local Security Checks	critical
323236	SUSE SLES12: libpython3_6m1_0 / libpython3_6m1_0-32bit / python36 / etc (SUSE-SU-2026:2655-1)	Nessus	SuSE Local Security Checks	medium
321923	SUSE SLED15: libpython3_13-1_0 / python313 / python313-base / python313-curses / etc (SUSE-SU-2026:2464-1)	Nessus	SuSE Local Security Checks	critical
321019	SUSE SLED15 / SLES15 Security Update : python311 (SUSE-SU-2026:2298-1)	Nessus	SuSE Local Security Checks	medium
315263	SUSE SLES15 Security Update : python310 (SUSE-SU-2026:1947-1)	Nessus	SuSE Local Security Checks	critical
315246	SUSE SLES12 Security Update : python3 (SUSE-SU-2026:1937-1)	Nessus	SuSE Local Security Checks	critical
315056	SUSE SLES15 Security Update : python39 (SUSE-SU-2026:1818-1)	Nessus	SuSE Local Security Checks	critical
313653	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : python3 (SUSE-SU-2026:1715-1)	Nessus	SuSE Local Security Checks	critical
309117	SUSE SLES15 Security Update : python (SUSE-SU-2026:1503-1)	Nessus	SuSE Local Security Checks	medium
306042	Linux Distros Unpatched Vulnerability : CVE-2026-3446	Nessus	Misc.	medium

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