fpdf2 implicitly loads external URLs and local image paths when rendering attacker-controlled content

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

5.8 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

EPSS

• CVE-2026-114609: 0.25% estimated exploitation activity in the next 30 days; percentile 16.76 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary `fpdf2` implicitly dereferences image resource references supplied to rendering APIs. If an application passes untrusted HTML, SVG, template data, or image paths into those APIs, `fpdf2` may issue outbound HTTP(S) requests or attempt to open local filesystem paths. This behavior is relevant in applications that render untrusted or user-provided input without sanitizing or restricting embedded resource references.

Description In affected versions, `fpdf2` uses a shared internal image-loading mechanism for multiple features. This loader: * fetches `http://` and `https://` URLs over the network * opens other string values as local filesystem paths During document processing, resource references embedded in input content are automatically dereferenced using this mechanism. This behavior is reachable through: * `FPDF.image()` * `FPDF.write_html()` via HTML ` ` * `FPDF.image()` when rendering SVG files containing ` ` or `xlink:href="...">` * template image elements that…

Published by the source

27 Oct 2026, 14:43 UTC

Last modified by the source

27 Oct 2026, 15:00 UTC

Source last checked

28 Oct 2026, 06:10 UTC

1. Revision 2 · amended · 28 Oct 2026

   Amended from osv record GHSA-rw7v-4hrq-x6r9

2. Revision 1 · created · 27 Oct 2026

   Published from ghsa record GHSA-rw7v-4hrq-x6r9

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# Patch Next advisory brief: CVE-2026-114609

Advisory: fpdf2 implicitly loads external URLs and local image paths when rendering attacker-controlled content
IDs: CVE-2026-114609, GHSA-rw7v-4hrq-x6r9
Record: https://patchnext.com/advisories/cve-2026-114609 (revision 2, source checked 28 Oct 2026, 06:10 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: fpdf2 2.8.8. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI fpdf2: affected < 2.8.8; fixed in 2.8.8

## Suggested inspection (read-only)
- `python -m pip show fpdf2`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on fpdf2.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-rw7v-4hrq-x6r9 (OSV record GHSA-rw7v-4hrq-x6r9 lists affected ranges: PyPI fpdf2 >=0 <2.8.8 (fixed))
- Verified: https://github.com/advisories/GHSA-rw7v-4hrq-x6r9 (GitHub-reviewed advisory GHSA-rw7v-4hrq-x6r9 lists affected ranges: PyPI fpdf2 >=0 <=2.8.7)

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