OESA-2026-1723

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1723
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-1723.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-1723
Upstream
Published
2026-03-27T11:10:45Z
Modified
2026-08-18T01:19:42Z
Severity
  • 6.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
rubygem-bcrypt security update
Details

bcrypt() is a sophisticated and secure hash algorithm designed by The OpenBSD project for hashing passwords. bcrypt-ruby provides a simple, humane wrapper for safely handling passwords.

Security Fix(es):

bcrypt-ruby is a Ruby binding for the OpenBSD bcrypt() password hashing algorithm. Prior to version 3.1.22, an integer overflow in the Java BCrypt implementation for JRuby can cause zero iterations in the strengthening loop. Impacted applications must be setting the cost to 31 to see this happen. The JRuby implementation of bcrypt-ruby (BCrypt.java) computes the key-strengthening round count as a signed 32-bit integer. When cost=31 (the maximum allowed by the gem), signed integer overflow causes the round count to become negative, and the strengthening loop executes zero iterations. This collapses bcrypt from 2^31 rounds of exponential key-strengthening to effectively constant-time computation — only the initial EksBlowfish key setup and final 64x encryption phase remain. The resulting hash looks valid ($2a$31$...) and verifies correctly via checkpw, making the weakness invisible to the application. This issue is triggered only when cost=31 is used or when verifying a $2a$31$ hash. This problem has been fixed in version 3.1.22. As a workaround, set the cost to something less than 31.(CVE-2026-33306)

Database specific 
{
    "severity": "Medium"
}
References

Affected packages

openEuler:20.03-LTS-SP4
rubygem-bcrypt

Package

Name
rubygem-bcrypt
Purl
pkg:rpm/openEuler/rubygem-bcrypt&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.1.12-2.oe2003sp4

Ecosystem specific 

{
    "aarch64": [
        "rubygem-bcrypt-3.1.12-2.oe2003sp4.aarch64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.12-2.oe2003sp4.aarch64.rpm",
        "rubygem-bcrypt-debugsource-3.1.12-2.oe2003sp4.aarch64.rpm"
    ],
    "noarch": [
        "rubygem-bcrypt-help-3.1.12-2.oe2003sp4.noarch.rpm"
    ],
    "src": [
        "rubygem-bcrypt-3.1.12-2.oe2003sp4.src.rpm"
    ],
    "x86_64": [
        "rubygem-bcrypt-3.1.12-2.oe2003sp4.x86_64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.12-2.oe2003sp4.x86_64.rpm",
        "rubygem-bcrypt-debugsource-3.1.12-2.oe2003sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1723.json"
openEuler:22.03-LTS-SP4
rubygem-bcrypt

Package

Name
rubygem-bcrypt
Purl
pkg:rpm/openEuler/rubygem-bcrypt&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.1.12-2.oe2203sp4

Ecosystem specific 

{
    "aarch64": [
        "rubygem-bcrypt-3.1.12-2.oe2203sp4.aarch64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.12-2.oe2203sp4.aarch64.rpm",
        "rubygem-bcrypt-debugsource-3.1.12-2.oe2203sp4.aarch64.rpm"
    ],
    "noarch": [
        "rubygem-bcrypt-help-3.1.12-2.oe2203sp4.noarch.rpm"
    ],
    "src": [
        "rubygem-bcrypt-3.1.12-2.oe2203sp4.src.rpm"
    ],
    "x86_64": [
        "rubygem-bcrypt-3.1.12-2.oe2203sp4.x86_64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.12-2.oe2203sp4.x86_64.rpm",
        "rubygem-bcrypt-debugsource-3.1.12-2.oe2203sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1723.json"
openEuler:24.03-LTS
rubygem-bcrypt

Package

Name
rubygem-bcrypt
Purl
pkg:rpm/openEuler/rubygem-bcrypt&distro=openEuler-24.03-LTS

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.1.18-2.oe2403sp2

Ecosystem specific 

{
    "aarch64": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp3.aarch64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp3.aarch64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp3.aarch64.rpm",
        "rubygem-bcrypt-3.1.18-2.oe2403.aarch64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403.aarch64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403.aarch64.rpm",
        "rubygem-bcrypt-3.1.18-2.oe2403sp1.aarch64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp1.aarch64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp1.aarch64.rpm",
        "rubygem-bcrypt-3.1.18-2.oe2403sp2.aarch64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp2.aarch64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp2.aarch64.rpm"
    ],
    "noarch": [
        "rubygem-bcrypt-help-3.1.18-2.oe2403sp3.noarch.rpm",
        "rubygem-bcrypt-help-3.1.18-2.oe2403.noarch.rpm",
        "rubygem-bcrypt-help-3.1.18-2.oe2403sp1.noarch.rpm",
        "rubygem-bcrypt-help-3.1.18-2.oe2403sp2.noarch.rpm"
    ],
    "src": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp3.src.rpm",
        "rubygem-bcrypt-3.1.18-2.oe2403.src.rpm",
        "rubygem-bcrypt-3.1.18-2.oe2403sp1.src.rpm",
        "rubygem-bcrypt-3.1.18-2.oe2403sp2.src.rpm"
    ],
    "x86_64": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp3.x86_64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp3.x86_64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp3.x86_64.rpm",
        "rubygem-bcrypt-3.1.18-2.oe2403.x86_64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403.x86_64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403.x86_64.rpm",
        "rubygem-bcrypt-3.1.18-2.oe2403sp1.x86_64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp1.x86_64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp1.x86_64.rpm",
        "rubygem-bcrypt-3.1.18-2.oe2403sp2.x86_64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp2.x86_64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp2.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1723.json"
openEuler:24.03-LTS-SP1
rubygem-bcrypt

Package

Name
rubygem-bcrypt
Purl
pkg:rpm/openEuler/rubygem-bcrypt&distro=openEuler-24.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.1.18-2.oe2403sp1

Ecosystem specific 

{
    "aarch64": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp1.aarch64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp1.aarch64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp1.aarch64.rpm"
    ],
    "noarch": [
        "rubygem-bcrypt-help-3.1.18-2.oe2403sp1.noarch.rpm"
    ],
    "src": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp1.src.rpm"
    ],
    "x86_64": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp1.x86_64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp1.x86_64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp1.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1723.json"
openEuler:24.03-LTS-SP2
rubygem-bcrypt

Package

Name
rubygem-bcrypt
Purl
pkg:rpm/openEuler/rubygem-bcrypt&distro=openEuler-24.03-LTS-SP2

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.1.18-2.oe2403sp2

Ecosystem specific 

{
    "aarch64": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp2.aarch64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp2.aarch64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp2.aarch64.rpm"
    ],
    "noarch": [
        "rubygem-bcrypt-help-3.1.18-2.oe2403sp2.noarch.rpm"
    ],
    "src": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp2.src.rpm"
    ],
    "x86_64": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp2.x86_64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp2.x86_64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp2.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1723.json"
openEuler:24.03-LTS-SP3
rubygem-bcrypt

Package

Name
rubygem-bcrypt
Purl
pkg:rpm/openEuler/rubygem-bcrypt&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.1.18-2.oe2403sp3

Ecosystem specific 

{
    "aarch64": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp3.aarch64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp3.aarch64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp3.aarch64.rpm"
    ],
    "noarch": [
        "rubygem-bcrypt-help-3.1.18-2.oe2403sp3.noarch.rpm"
    ],
    "src": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp3.src.rpm"
    ],
    "x86_64": [
        "rubygem-bcrypt-3.1.18-2.oe2403sp3.x86_64.rpm",
        "rubygem-bcrypt-debuginfo-3.1.18-2.oe2403sp3.x86_64.rpm",
        "rubygem-bcrypt-debugsource-3.1.18-2.oe2403sp3.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-1723.json"