Use of a Broken or Risky Cryptographic Algorithm Affecting ceph/ceph package, versions [,19.2.6)[20.0.0,20.2.4)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published24 Sept 2026
- disclosed19 Aug 2026
- creditUnknown
Introduced: 19 Aug 2026
CVE-2026-39944 (opens in a new tab)How to fix?
Upgrade ceph/ceph to version 19.2.6, 20.2.4 or higher.
Overview
Affected versions of this package are vulnerable to Use of a Broken or Risky Cryptographic Algorithm via the STS session token process. An attacker can gain full administrative access to all S3 objects and buckets by manipulating the contents of a valid unprivileged token using a cryptographic attack. This is only exploitable if STS is enabled and the attacker possesses a valid STS token.