Is CVE-2026-31899 actively exploited?

CVE-2026-31899 has no public evidence of in-the-wild exploitation as of 2026-03-18.

What is the CVSS score for CVE-2026-31899?

CVE-2026-31899 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2026-31899?

Patch guidance is available from courtbouillon security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-31899.

Which products are affected by CVE-2026-31899?

1 product: courtbouillon cairosvg.

Fix CVE-2026-31899 - HIGH courtbouillon cairosvg

Description

CairoSVG is an SVG converter based on Cairo, a 2D graphics library. Prior to Kozea/CairoSVG has exponential denial of service via recursive <use> element amplification in cairosvg/defs.py. This causes CPU exhaustion from a small input.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-674

Metadata

Primary Vendor: COURTBOUILLON
Published: 3/13/2026
Last Modified: 3/18/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-31899

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary