CVE-2021-3907Arbitrary filepath traversal via URI injection
- 7.4HighCVSS base score
- 4.2%Exploitation in 30 daysEPSS · top 8.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By cloudflare
- 16 days later
· 16 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
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 8.9% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.
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
References4
- 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)
- EUVD EUVD-2021-2338 (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://cveledger.app/cve/CVE-2021-3907)Record last updated .