CVE-2026-114610: fpdf2: Exponential SVG '<use>' expansion causes CPU and memory exhaustion in 'FPDF.image()'

October 27, 2026

fpdf2 expands SVG <use> references by deep-copying the complete referenced graphics tree. A small SVG can use nested references to make the number of in-memory objects grow exponentially, causing excessive CPU and memory consumption during FPDF.image() processing.

This was reproduced with an 895-byte SVG on fpdf2 2.8.7. Under a 128 MB process limit, the input kept the process busy for about 14 seconds before raising MemoryError.

References

github.com/advisories/GHSA-wqw6-wpr3-45rh
github.com/py-pdf/fpdf2/commit/d7bd1061205d50da6a541dadfdb9d66beb763f2f
github.com/py-pdf/fpdf2/pull/1889
github.com/py-pdf/fpdf2/releases/tag/2.8.8
github.com/py-pdf/fpdf2/security/advisories/GHSA-wqw6-wpr3-45rh
nvd.nist.gov/vuln/detail/CVE-2026-114610

Code Behaviors & Features

Detect and mitigate CVE-2026-114610 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →