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EulerOS 2.0 SP15 : python3 (EulerOS-SA-2026-2947)
critical Nessus Plugin ID 332860
Synopsis
The remote EulerOS host is missing multiple security updates.Description
According to the versions of the python3 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :The import hook in CPython that handles legacy *.pyc files (SourcelessFileLoader) is incorrectly handled in FileLoader (a base class) and so does not use io.open_code() to read the .pyc files. sys.audit handlers for this audit event therefore do not fire.(CVE-2026-2297)
CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host.(CVE-2026-1502)
http.cookies.Morsel.js_output() returns an inline script snippet and only escapes ' for JavaScript string context. It does not neutralize the HTML parser-sensitive sequence /script inside the generated script element. Mitigation base64-encodes the cookie value to disallow escaping using cookie value.(CVE-2026-6019)
Mitgation of CVE-2026-4519 was incomplete. If the URL contained '%action' the mitigation could be bypassed for certain browser types the 'webbrowser.open()' API could have commands injected into the underlying shell. See CVE-2026-4519 for details.(CVE-2026-4786)
Use-after-free (UAF) was possible in the `lzma.LZMADecompressor`, `bz2.BZ2Decompressor`, and `gzip.GzipFile` when a memory allocation fails with a `MemoryError` and the decompression instance is re- used. This scenario can be triggered if the process is under memory pressure. The fix cleans up the dangling pointer in this specific error condition._x000D_
_x000D_ The vulnerability is only present if the program re-uses decompressor instances across multiple decompression calls even after a `MemoryError` is raised during decompression. Using the helper functions to one-shot decompress data such as `lzma.decompress()`, `bz2.decompress()`, `gzip.decompress()`, and `zlib.decompress()` are not affected as a new decompressor instance is used per call. If the decompressor instance is not re-used after an error condition, this usage is similarly not vulnerable.(CVE-2026-6100)
Tenable has extracted the preceding description block directly from the EulerOS python3 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 python3 packages.See Also
Plugin Details
Severity: Critical
ID: 332860
File Name: EulerOS_SA-2026-2947.nasl
Version: 1.1
Type: Local
Family: Huawei Local Security Checks
Published: 8/6/2026
Updated: 8/6/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.12
CVSS v2
Risk Factor: Medium
Base Score: 6.4
Temporal Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
CVSS Score Source: CVE-2026-6019
CVSS v3
Risk Factor: Medium
Base Score: 6.1
Temporal Score: 5.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS v4
Risk Factor: Critical
Base Score: 9.1
Threat Score: 8.1
Threat Vector: CVSS:4.0/E:P
Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS Score Source: CVE-2026-6100
Vulnerability Information
CPE: cpe:/o:huawei:euleros:2.0, p-cpe:/a:huawei:euleros:python3-devel, p-cpe:/a:huawei:euleros:python3-fgo, p-cpe:/a:huawei:euleros:python3-help, p-cpe:/a:huawei:euleros:python3-unversioned-command, p-cpe:/a:huawei:euleros:python3
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp
Excluded KB Items: Host/EulerOS/uvp_version
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 8/6/2026
Vulnerability Publication Date: 2/12/2026
Reference Information
CVE: CVE-2026-1502, CVE-2026-2297, CVE-2026-4786, CVE-2026-6019, CVE-2026-6100