Detections
Analytics

Echo: python3.13: security update to 3.13.5-2+e36

critical Tenable Cloud Security Plugin ID 461378

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. 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)

Solution

Update the python3.13 library and its related packages to version 3.13.5-2+e36 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-6100

Plugin Details

Severity: Critical

ID: 461378

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.5

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2026-6100

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.1

Threat Score: 6.9

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:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/14/2026

Vulnerability Publication Date: 2/12/2026

Reference Information

CVE: CVE-2026-6100