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VulnerabilityPublished

CVE-2026-50267: SteeltoeOSS Steeltoe.Configuration.Abstractions · Cleartext Storage of Sensitive Information

Affects SteeltoeOSS Steeltoe.Configuration.AbstractionsSource CVE Database V5

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Not known to be exploited · CVSS 4.7 Medium : upgrade to 4.2.0 when convenient.

Data as of 30 Oct 2026, 20:25 UTC

CVSS 3.1 base score
4.7Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.06% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.2.0
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade Steeltoe.Configuration.Abstractions and SteeltoeOSS/steeltoe.configuration.abstractions to 4.2.0.

Affected software

ProductAffectedFixed in
SteeltoeOSSSteeltoe.Configuration.AbstractionsAffected
  • >=4.0.0 <4.2.0
Fixed in
  • 4.2.0
NuGetSteeltoeOSS/steeltoe.configuration.abstractionspkg:nuget/SteeltoeOSS/steeltoe.configuration.abstractionsOther threatsAffected
  • >=4.0.0 <4.2.0
Fixed in
  • 4.2.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Steeltoe.Configuration.Abstractions version 4.2.0 includes a fix for this vulnerability. Users are advised to upgrade to version 4.2.0 or later to eliminate the insecure storage of TLS credentials. If immediate upgrading is not possible, mitigate the risk by preventing other processes running under different user IDs from accessing the container's temporary directory (e.g., /tmp) to restrict exposure of the temporary files containing sensitive credentials.

Description

Steeltoe.Configuration.Abstractions versions 4.0.0 through 4.1.0 improperly store TLS client credentials from MySQL or PostgreSQL service bindings in world-readable temporary files on Linux systems. These files are created with permissions that allow other users to read sensitive key material and are not deleted after use. Version 4.2.0 addresses this issue by patching the insecure file handling. The vulnerability has a medium severity rating with a CVSS score of 4.7.

References

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