SUSE SLES15: libpython3_11-1_0 / python311 / python311-base / python311-curses / etc (SUSE-SU-2026:4809-1)

critical Nessus Plugin ID 370390

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4809-1 advisory.

- CVE-2026-15310: memory exhaustion in zipfile in bzip2/LZMA/Zstandard decompression (bsc#1277111).
- CVE-2026-15806: urllib.request.HTTPPasswordMgr credentials for one URL scheme sent over another scheme (bsc#1276223).
- CVE-2026-17084: StringPrep algorithm considered Unicode codepoint attributes outside Unicode 3.2.0 (bsc#1276226).
- CVE-2026-19445: reassigned SNI callbacks with unreferenced SSLContext instances can cause use-after-free (bsc#1283969).
- CVE-2026-19553: omitted server_hostname arguments in wrap_bio() can cause silent hostname verification bypasses (bsc#1283826).
- CVE-2026-19672: tarfile extraction filter bypass allows creation of directories outside the destination (bsc#1276227).
- CVE-2026-82049: tarfile extraction filters mishandle archives containing a hard link to a symbolic link, allowing file modification and content disclosure (bsc#1280459).

Changes for python311:

- Update to 3.11.17:
- Library
- gh-156002: zipfile again reads members through a third-party decompressor installed by monkey-patching the private _get_decompressor() to return an object that only implements old BZ2Decompressor API from Python 3.3. Note that decompressors without needs_input and two-argument decompress() are vulnerable to CVE 2026-15310.
- gh-156353: Fix configparser parsing when using whitespace in delimiters.
- Build
- gh-155757: Set the --argv0 argument to wasmtime for WASI builds so the test suite passes. Otherwise the calculated paths to the stdlib for frozen modules is incorrect.

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.

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 370390

File Name: suse_SU-2026-4809-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 10/22/2026

Updated: 10/22/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

Percentile: 96.3

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-82049

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 7.1

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-19445

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:libpython3_11-1_0, p-cpe:/a:novell:suse_linux:python311-base, p-cpe:/a:novell:suse_linux:python311-curses, p-cpe:/a:novell:suse_linux:python311-dbm, p-cpe:/a:novell:suse_linux:python311-devel, p-cpe:/a:novell:suse_linux:python311-doc-devhelp, p-cpe:/a:novell:suse_linux:python311-doc, p-cpe:/a:novell:suse_linux:python311-idle, p-cpe:/a:novell:suse_linux:python311-tk, p-cpe:/a:novell:suse_linux:python311-tools, p-cpe:/a:novell:suse_linux:python311

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 10/21/2026

Vulnerability Publication Date: 8/18/2026

Reference Information

CVE: CVE-2026-15310, CVE-2026-15806, CVE-2026-17084, CVE-2026-19445, CVE-2026-19553, CVE-2026-19672, CVE-2026-82049

IAVA: 2026-A-0890

SuSE: SUSE-SU-2026:4809-1

Detections

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