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CVE-2021-3907
Arbitrary filepath traversal via URI injection
High7.4EPSS 4.2%
- Published
- Updated
- Reserved
- Assigned by
- cloudflare
Description
OctoRPKI does not escape a URI with a filename containing "..", this allows a repository to create a file, (ex. rsync://example.org/repo/../../etc/cron.daily/evil.roa), which would then be written to disk outside the base cache folder. This could allow for remote code execution on the host machine OctoRPKI is running on.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| cloudflareCNA (assigner) | 3.1 | High7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 4.2% · top 9.0% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.
Weakness
Affected products
- affected unspecified – < 1.4.3
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/cloudflare/cfrpkiGHSA-cqh2-vc2f-q4fh (opens in a new tab)
What to do
Solution: Upgrade to 1.4.3
References (4)
- https://github.com/cloudflare/cfrpki/security/advisories/GHSA-cqh2-vc2f-q4fh (opens in a new tab)x_refsource_MISCx_transferred
- DSA-5033 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- DSA-5041 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://github.com/cloudflare/cfrpki/security/advisories/GHSA-3jhm-87m6-x959 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-cqh2-vc2f-q4fh (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-3907)Record last updated .