VDB

CVE-2026-113793

CVE-2026-113793 PUBLISHED CVSS 6 MEDIUM

pypdf: Possible infinite loop when removing tree items

Reported by github_m · Published October 21, 2026

pypdf is fixed in 6.20.1 (PyPI)

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, removing an object from a crafted cyclic PDF tree, such as an outline item, can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

PackageEcosystemFixed in
pypdfPyPI6.20.1
open-webuiChainguard0.12.3-r5
open-webuiWolfi0.12.3-r5
litellm-fipsChainguard1.106.1-r3
litellmChainguard1.106.1-r2

Risk scores

CVSS 4.0
6
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected products

VendorProductVersions
py-pdfpypdf< 6.20.1
chainguardopen-webui0
wolfiopen-webui0
chainguardlitellm-fips0
chainguardlitellm0
PyPIpypdf0
py-pdfpypdf0

Timeline

  • Oct 21, 2026 CVE Published
  • Oct 22, 2026 EPSS Score (3 in total, the first dated here)
  • Oct 22, 2026 Coalition ESS Score
  • Oct 28, 2026 CVE Updated
  • Oct 30, 2026 Security Advisory

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vulnetix vdb vuln CVE-2026-113793
vulnetix vdb fixes CVE-2026-113793

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  "https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-113793/fixes/registry"

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References

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