CVE-2021-29421
Improper Restriction of XML External Entity Reference in pikepdf
7.5
HIGH
CVSS 3.1
EPSS 0.27%
Description
models/metadata.py in the pikepdf package 1.3.0 through 2.9.2 for Python allows XXE when parsing XMP metadata entries.
How to fix CVE-2021-29421
To remediate CVE-2021-29421, upgrade the affected package to a fixed version below.
- Debian/pikepdf—upgrade to 1.17.3+dfsg-5 or later
- PyPI/pikepdf—upgrade to 2.10.0 or later
- —upgrade to 3f38f73218e5e782fe411ccbb3b44a793c0b343a or later
Is CVE-2021-29421 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.17.3+dfsg-5
- >= 1.3.0, < 2.10.0
- from 0, < 3f38f73218e5e782fe411ccbb3b44a793c0b343a | >= 1.3.0, < 2.10.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |