Medium severity5.5GHSA Advisory· Published Jun 22, 2026· Updated Jun 25, 2026
CVE-2026-49461
CVE-2026-49461
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting the text of a page which contains a form XObject with self-references. This vulnerability is fixed in 6.12.2.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pypdfPyPI | < 6.12.2 | 6.12.2 |
Affected products
3Patches
Vulnerability mechanics
References
4- github.com/py-pdf/pypdf/pull/3805nvdIssue TrackingPatchWEB
- github.com/py-pdf/pypdf/releases/tag/6.12.2nvdPatchRelease NotesWEB
- github.com/py-pdf/pypdf/security/advisories/GHSA-j543-4vmf-qm7vnvdPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-j543-4vmf-qm7vghsaADVISORY
News mentions
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