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  4. CVE 2026 114610 fpdf2 exponential svg use expansion causes cpu
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Back to active CVEs
Medium · CVSS 6.5CVE-2026-114610

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

Answer in brief

CVE-2026-114610 records a Medium severity (CVSS 6.5) vulnerability in fpdf2: Exponential SVG '<use>' expansion causes CPU and memory exhaustion in 'FPDF.image()'. The current sources do not mark it as known exploited. The current feed maps py-pdf/fpdf2 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 22, 2026Updated Oct 22, 2026Source checked Oct 22, 2026First seen by HOL Oct 22, 2026Material review Oct 22, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.5
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps py-pdf/fpdf2 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
py-pdf/fpdf2generic>=2.5.0 <2.8.82.8.8

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for py-pdf/fpdf2.
  2. 2Review the reported fix. Update py-pdf/fpdf2 to 2.8.8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 22, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 22, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 22, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

fpdf2 is a PDF creation library for Python. From 2.5.0 until 2.8.8, fpdf2's SVGObject.build_xref() passes nested SVG <use> references to GraphicsContext.add_item(), whose default clone=True deep-copy behavior copies the complete referenced graphics tree during FPDF.image() processing. Repeating references at each nesting level makes the in-memory object count and processing work grow exponentially, allowing a small user-controlled SVG to consume excessive CPU and memory, raise MemoryError, fail PDF generation jobs, and reduce or exhaust worker capacity. ResourceAccessPolicy does not prevent the issue because the references are inline and require no external resource, XML entity, local file, or permissive network setting. This issue is fixed in version 2.8.8.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • fpdf2 implicitly loads external URLs and local image paths when rendering attacker-controlled contentSame py-pdf/fpdf2 package
  • PhpSpreadsheet ODS Reader: Unbounded number-rows-repeated → CPU & Memory Exhaustion (DoS)Also CWE-400
  • OpenTelemetry Python: Unbounded tracestate parsing in opentelemetry-apiAlso CWE-400
  • Large tables in data apps can bring down execution services in KNIME HubAlso CWE-770
  • GraphQL-core: Denial of service via quadratic complexity in the OverlappingFieldsCanBeMerged validation ruleAlso CWE-400
  • GraphQL-core: Denial of service via comment tokens bypassing the parser's max_tokens limitAlso CWE-400

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-400, CWE-770
Source
CVE List V5
Source checked
Oct 22, 2026
References
4 linked sources
Open source record