CVE-2026-126353ModerateNetworkRevised 15 Nov

Addressable: Regular Expression Denial of Service in Addressable templates with several exploded variables

No KEV listing collectedCVSS 5.9Fix not stated

MSRC advisory NVD CVE.org

Assessment

Severity: Moderate
CVSS base score: 5.9
Impact: Not stated
Exploitation detected: Unknown: not stated by MSRC
Exploitability: Not assessed
Publicly disclosed: Unknown: not stated by MSRC
EPSS · 30-day forecast: No EPSS score collected
Customer action: Required: follow the MSRC remediation guidance

More details

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Public detection template: No Nuclei template is listed in the current collected catalog
Component: Mariner
Weakness: CWE-1333: Inefficient Regular Expression Complexity
Issued by: GitHub_M
Published: 13 Nov 2026 · November 2026
Last revised: 15 Nov 2026Information published.

CVSS 3.1 base metricsRed raises the risk · green lowers it

Attack vector: NetworkAV:N
Attack complexity: HighAC:H
Privileges required: NonePR:N
User interaction: NoneUI:N
Scope: UnchangedS:U
Confidentiality: NoneC:N
Integrity: NoneI:N
Availability: HighA:H

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Open Source Software

1 affected product

azl4 rubygem-addressable 2.8.6-9.azl4 on Azure Linux 4.0

Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version

Field-level log (1)

Up to 100 recent field edits are shown; older edits may be outside retention.

15 Nov 2026 · 08:08:43 UTC Last revised13 Nov 2026 20:43 UTC → 15 Nov 2026 01:04 UTC

Explore global source statements, affected packages and advisory history for CVE-2026-126353. The catalog has a separate collection scope from Microsoft release records.

More advisories, affected versions and source history

cve-program · CVE-2026-126353

Published

addressable

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "sporkmonger",
                    "product": "addressable",
                    "versions": [
                        {
                            "version": ">= 2.3.0, < 2.9.1",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON