Detections
Analytics

SCA: security update for pyasn1 (GHSA-hm4w-wwcw-mr6r)

high Tenable Cloud Security Plugin ID 445074

Description

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

 - pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the univ.Real type converted its mantissa,
 base, and exponent value to a Python float using exact big-integer exponentiation. A BER, CER, or DER
 encoded REAL value only a few bytes long can carry a very large exponent, causing float conversion through
 prettyPrint(), str(), comparison, arithmetic, int(), or an explicit float() call to consume excessive CPU
 and memory and hang applications that decode untrusted ASN.1 data and then print, log, or compare decoded
 objects. This issue is fixed in version 0.6.4. (CVE-2026-59886)

Solution

Update the pyasn1 library and its related packages to version 0.6.4 or later.

See Also

https://github.com/advisories/GHSA-hm4w-wwcw-mr6r

Plugin Details

Severity: High

ID: 445074

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 7/22/2026

Updated: 7/22/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.77

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-59886

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/21/2026

Vulnerability Publication Date: 7/14/2026

Reference Information

CVE: CVE-2026-59886

cwe: CWE-400