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Echo: joserfc: security update to 1.6.8

high Tenable Cloud Security Plugin ID 457284

Description

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

 - joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption
 (JOSE) standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the
 caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign and
 HMACAlgorithm.verify in src/joserfc/_rfc7518/jws_algs.py pass the output of OctKey.get_op_key(...) to
 hmac.new(...) and OctKey.import_key in src/joserfc/_rfc7518/oct_key.py only emits a SecurityWarning for
 keys shorter than 14 bytes without rejecting zero-length input. This issue is fixed in version 1.6.8.
 (CVE-2026-49852)

Solution

Update the joserfc library and its related packages to version 1.6.8 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-49852

Plugin Details

Severity: High

ID: 457284

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.78

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-49852

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:H/A:N

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/4/2026

Vulnerability Publication Date: 7/2/2026

Reference Information

CVE: CVE-2026-49852