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VulnerabilityPublished

CVE-2026-50268: SteeltoeOSS Steeltoe.Configuration.Encryption · Plaintext Storage of a Password

Affects SteeltoeOSS Steeltoe.Configuration.EncryptionSource CVE Database V5

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Not known to be exploited · CVSS 1.9 Low : upgrade to 4.2.0 when convenient.

Data as of 30 Oct 2026, 20:25 UTC

CVSS 3.1 base score
1.9Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.04% 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:H/UI:N/S:U/C:L/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 SteeltoeOSS Steeltoe.Configuration.Encryption to 4.2.0.

Affected software

ProductAffectedFixed in
SteeltoeOSSSteeltoe.Configuration.EncryptionAffected
  • >=4.0.0 <4.2.0
Fixed in
  • 4.2.0
NuGetSteeltoeOSS/steeltoe.configuration.encryptionpkg:nuget/SteeltoeOSS/steeltoe.configuration.encryptionOther threatsAffected
  • =4.0.0
  • <=4.1.0
Fixed in–

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

AI-suggested

Upgrade Steeltoe.Configuration.Encryption to version 4.2.0 or later, where the issue is fixed and OAEP encryption is correctly enabled. Until upgrading, users should be aware that selecting OAEP does not provide the intended encryption strength.

Description

Steeltoe.Configuration.Encryption versions 4.0.0 through 4.1.0 contain a vulnerability where configuring RSA encryption with the OAEP algorithm does not actually enable OAEP. Instead, due to an incorrect transformation string in the BouncyCastle library, the OAEP setting falls back to using PKCS#1 v1.5 encryption, which is less secure. This issue is fixed in version 4.2.0.

References

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