CVE-2026-49461 — MEDIUM (5.5)

Q: How severe is CVE-2026-49461?

CVE-2026-49461 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-49461?

Check the references section above for vendor advisories and patch information. Affected products include: Pypdf Project Pypdf.

Vulnerability 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.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Pypdf Project	Pypdf	< 6.12.2

Related Weaknesses (CWE)

CWE-400

References

https://github.com/py-pdf/pypdf/pull/3805Issue TrackingPatch
https://github.com/py-pdf/pypdf/releases/tag/6.12.2PatchRelease Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-j543-4vmf-qm7vPatchVendor Advisory

FAQ

What is CVE-2026-49461?

CVE-2026-49461 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 o...

How severe is CVE-2026-49461?

CVE-2026-49461 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-49461?

Check the references section above for vendor advisories and patch information. Affected products include: Pypdf Project Pypdf.