UNKNOWNPyPI →
pypdf: Possible large memory usage for large /ToUnicode streams
pypdf: Possible large memory usage for large /ToUnicode streams
Affected packages
- pypdf— before 6.15.0
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-fp3f-mc75-235c
- https://github.com/py-pdf/pypdf/pull/3944
- https://github.com/py-pdf/pypdf/commit/afba8080e19d29a3c256a742b340995e695b35aa
- https://github.com/py-pdf/pypdf
- https://github.com/py-pdf/pypdf/releases/tag/6.15.0
- https://pypi.org/project/pypdf
- https://github.com/advisories/GHSA-fp3f-mc75-235c
- https://nvd.nist.gov/vuln/detail/CVE-2026-71870
Structured record: https://osv.dev/vulnerability/PYSEC-2026-3655
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
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