CVE-2026-31899

CairoSVG · CairoSVG

CairoSVG, a Python-based SVG to PDF/PNG converter, is vulnerable to a flaw that may lead to unauthorized file access or resource exhaustion during graphics processing.

Executive summary

The CairoSVG library contains a high-severity vulnerability that could allow an attacker to compromise systems during the conversion of maliciously crafted SVG files.

Vulnerability

This vulnerability involves the processing of SVG files by the CairoSVG library. Attackers may be able to provide specially crafted SVG files that exploit the underlying Cairo graphics library, potentially leading to Server-Side Request Forgery (SSRF) or local file inclusion.

Business impact

With a CVSS score of 7.5, this vulnerability poses a high risk to applications that allow users to upload or process SVG images. An exploit could lead to the exposure of internal system files or provide a foothold for further lateral movement within the corporate network.

Remediation

Immediate Action: Upgrade the CairoSVG Python package to the latest version immediately to patch the processing flaw.

Proactive Monitoring: Monitor system resource usage and outbound network connections from servers performing SVG conversions for signs of SSRF or exploitation attempts.

Compensating Controls: Implement strict sandboxing for graphics processing tasks and use a Content Security Policy (CSP) to limit the capabilities of processed SVG content.

Exploitation status

Public Exploit Available: false

Analyst recommendation

Immediate remediation is required for any application utilizing CairoSVG for image conversion. Updating the library is the most effective way to mitigate the risk of remote exploitation and protect internal data from unauthorized access.