Kozea CairoSVG up to 2.8.x recursion

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Kozea CairoSVG up to 2.8.x. This issue affects some unknown processing. The manipulation results in recursion. This vulnerability is identified as CVE-2026-31899. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Kozea CairoSVG up to 2.8.x. Affected is an unknown function. The manipulation with an unknown input leads to a recursion vulnerability. CWE is classifying the issue as CWE-674. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-31899 since 03/09/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 302268 (Linux Distros Unpatched Vulnerability : CVE-2026-31899), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.9.0 eliminates this vulnerability. Applying the patch 6dde8685ed3f19837767bce7a13a5491e3d0e0bf is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (302268). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Recursion
CWE: CWE-674 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 302268
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-31899

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: CairoSVG 2.9.0
Patch: 6dde8685ed3f19837767bce7a13a5491e3d0e0bf

Timelineinfo

03/09/2026 CVE reserved
03/13/2026 +4 days Advisory disclosed
03/13/2026 +0 days VulDB entry created
03/20/2026 +7 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-f38f-5xpm-9r7c
Status: Confirmed

CVE: CVE-2026-31899 (🔒)
GCVE (CVE): GCVE-0-2026-31899
GCVE (VulDB): GCVE-100-351036

Entryinfo

Created: 03/13/2026 21:16
Updated: 03/20/2026 10:45
Changes: 03/13/2026 21:16 (65), 03/15/2026 04:38 (1), 03/15/2026 06:34 (2), 03/20/2026 10:45 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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