pypdf: pypdf is a free and open-source pure-python PDF library
CVE-2026-28351 is fixed in pypdf on 1 platform by DEBIAN-CVE-2026-28351 (version 6.9.0-1), released February 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.
pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| pypdf · Debian 14 | 6.9.0-1 | DEBIAN-CVE-2026-28351 | Feb 27, 2026 |
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