Resource Exhaustion Affecting python3.14-cryptography package, versions <0:45.0.4-4.el9_8.6


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.25% (15th percentile)

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  • Snyk IDSNYK-ROCKY9-PYTHON314CRYPTOGRAPHY-19664269
  • published10 Sept 2026
  • disclosed3 Aug 2026

Introduced: 3 Aug 2026

CVE-2026-69249  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 python3.14-cryptography to version 0:45.0.4-4.el9_8.6 or higher.
This issue was patched in RLSA-2026:64774.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.14-cryptography package and not the python3.14-cryptography package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:9 relevant fixed versions and status.

python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of build_chain_inner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0.

CVSS Base Scores

version 3.1