Improper Verification of Cryptographic Signature Affecting jaeger package, versions <0:2.19.0-1.2.hum1


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.19% (10th percentile)

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  • Snyk IDSNYK-RHEL10-JAEGER-18934360
  • published19 Aug 2026
  • disclosed17 Jul 2026

Introduced: 17 Jul 2026

CVE-2026-49852  (opens in a new tab)
CWE-347  (opens in a new tab)

How to fix?

Upgrade RHEL:10 jaeger to version 0:2.19.0-1.2.hum1 or higher.
This issue was patched in RHSA-2026:42045.

NVD Description

Note: Versions mentioned in the description apply only to the upstream jaeger package and not the jaeger package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1