pypdf: Possible long runtimes when generating appearance streams
High-risk advisory
CVE-2026-102998
Summary
pypdf: Possible long runtimes when generating appearance streams
Why it matters
GitHub has published a reviewed security advisory for pypdf. Prioritize it with other application dependency updates, especially because EPSS places it in the 42% percentile.
Operator check
Check whether pypdf is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 8.7. EPSS probability: 0.5%; percentile: 42%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.