models/metadata.py in the pikepdf package 1.3.0 through 2.9.2 for Python allows XXE when parsing XMP metadata entries.
Priority LOW 36CWE-611Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-611 and the CVSS impact.
Summary
models/metadata.py in the pikepdf package 1.3.0 through 2.9.2 for Python allows XXE when parsing XMP metadata entries.
Why it matters now
EPSS 0.01681 77th percentileScored 2026-11-07
Fix Fixed pikepdf (PyPI): 2.10.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | pikepdf (PyPI) | 1.3.0 to before 2.10.0 | 2.10.0 | Patch available | GHSA-ccgm-3xw4-h5p8 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- pikepdf (PyPI) Vendor— Affected 1.3.0 to before 2.10.0 Fixed in 2.10.0 Patch available GHSA-ccgm-3xw4-h5p8
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:pikepdf_project:pikepdf:*:*:*:*:*:*:*:* | 1.3.0 – 2.9.2 | Vulnerable | Pikepdf Project |
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 32 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 33 | Vulnerable | Fedoraproject |
- cpe:2.3:a:pikepdf_project:pikepdf:*:*:*:*:*:*:*:* Versions 1.3.0 – 2.9.2 Vulnerable ·Pikepdf Project
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
Remediation
- Fix · GHSA-ccgm-3xw4-h5p8 pikepdf (PyPI) Fixed in 2.10.0 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-29421
- 2026-10-03 Alias added: GHSA-ccgm-3xw4-h5p8
References
Advisory 5
Other 4
- https://github.com/pikepdf/pikepdf
- https://github.com/pypa/advisory-database/tree/main/vulns/pikepdf/PYSEC-2021-34.yaml
- https://lists.fedoraproject.org/archives/list/[email protected]/message/36P4HTLBJPO524WMQWW57N3QRF4RFSJG
- https://lists.fedoraproject.org/archives/list/[email protected]/message/3QFLBBYGEDNXJ7FS6PIWTVI4T4BUPGEQ
Sources
- CVE-2021-29421 · CVE Program
- CVE-2021-29421 · NVD
- FIRST EPSS
- GHSA-ccgm-3xw4-h5p8 · GitHub Advisory Database · CC BY 4.0
- CVE-2021-29421 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences