Hi,

The following vulnerabilities were published for pypdf.

CVE-2026-71852[0]:
| pypdf is a free and open-source pure-python PDF library. Prior to
| 6.15.0, a crafted PDF can cause long runtimes and large memory
| consumption when pypdf/_font.py function
| Font._collect_cid_character_widths expands unusually large CID font
| /W width ranges or excessive width entries during text extraction.
| This issue is fixed in 6.15.0.


CVE-2026-71870[1]:
| pypdf is a free and open-source pure-python PDF library. Prior to
| 6.15.0, a crafted PDF can cause large memory consumption when
| pypdf/_cmap.py function parse_bfrange parses unusually large source-
| code or destination-string tokens in a font /ToUnicode CMap during
| text extraction. This issue is fixed in 6.15.0.


If you fix the vulnerabilities please also make sure to include the
CVE (Common Vulnerabilities & Exposures) ids in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-71852
https://www.cve.org/CVERecord?id=CVE-2026-71852
[1] https://security-tracker.debian.org/tracker/CVE-2026-71870
https://www.cve.org/CVERecord?id=CVE-2026-71870

Regards,
Salvatore