USN-8515-1

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Source
https://ubuntu.com/security/notices/USN-8515-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8515-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8515-1
Upstream
Related
Published
2026-07-07T10:46:24Z
Modified
2026-07-07T21:19:36.720752743Z
Summary
ruby-addressable vulnerability
Details

It was discovered that Addressable incorrectly handled certain URI templates, generating regular expressions vulnerable to catastrophic backtracking. An attacker could use this issue to craft a URI that, when matched against a vulnerable template, causes excessive resource consumption, leading to a denial of service.

References

Affected packages

Ubuntu:Pro:16.04:LTS
ruby-addressable

Package

Name
ruby-addressable
Purl
pkg:deb/ubuntu/ruby-addressable?arch=source&distro=esm-apps-legacy%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.3.8-1ubuntu0.1~esm1

Affected versions

2.*
2.3.8-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "ruby-addressable",
            "binary_version": "2.3.8-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8515-1.json"
cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-35611",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:16.04:LTS"
}
Ubuntu:Pro:18.04:LTS
ruby-addressable

Package

Name
ruby-addressable
Purl
pkg:deb/ubuntu/ruby-addressable?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.5.2-1ubuntu0.1~esm1

Affected versions

2.*
2.5.1-2
2.5.2-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "ruby-addressable",
            "binary_version": "2.5.2-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-35611",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:18.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8515-1.json"
Ubuntu:Pro:20.04:LTS
ruby-addressable

Package

Name
ruby-addressable
Purl
pkg:deb/ubuntu/ruby-addressable?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.0-1ubuntu0.1~esm1

Affected versions

2.*
2.5.2-1
2.7.0-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "ruby-addressable",
            "binary_version": "2.7.0-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-35611",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:20.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8515-1.json"
Ubuntu:Pro:22.04:LTS
ruby-addressable

Package

Name
ruby-addressable
Purl
pkg:deb/ubuntu/ruby-addressable?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.8.0-3ubuntu0.1~esm1

Affected versions

2.*
2.7.0-2
2.8.0-3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "ruby-addressable",
            "binary_version": "2.8.0-3ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-35611",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8515-1.json"
Ubuntu:Pro:24.04:LTS
ruby-addressable

Package

Name
ruby-addressable
Purl
pkg:deb/ubuntu/ruby-addressable?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.8.5-1ubuntu0.1~esm1

Affected versions

2.*
2.8.1-1
2.8.5-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "ruby-addressable",
            "binary_version": "2.8.5-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-35611",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8515-1.json"
Ubuntu:Pro:26.04:LTS
ruby-addressable

Package

Name
ruby-addressable
Purl
pkg:deb/ubuntu/ruby-addressable?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.8.7-2ubuntu0.26.04.1~esm1

Affected versions

2.*
2.8.7-2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "ruby-addressable",
            "binary_version": "2.8.7-2ubuntu0.26.04.1~esm1"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-35611",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:26.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8515-1.json"