CVE-2026-62943
- Source
- https://cve.org/CVERecord?id=CVE-2026-62943
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62943.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-62943
- Aliases
-
- GHSA-pf45-7g54-65h5
- Downstream
- Published
- 2026-09-18T16:24:48Z
- Modified
- 2026-10-28T02:30:37Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- btrbk: SSH Command Filter Bypass in ssh_filter_btrbk.sh
- Details
-
btrbk is a tool for creating snapshots and remote backups of Btrfs subvolumes. From 0.29.0 until 0.32.7, btrbk's ssh_filter_btrbk.sh constructs allow_stream_match with a start anchor but without an end-of-string anchor for the complete command. A user restricted through an authorized_keys forced command can append a trailing pipe command after a valid btrbk command prefix, bypassing the allowlist and executing arbitrary commands with the privileges of the backup-target SSH account. Deployments that do not use ssh_filter_btrbk.sh in authorized_keys are not affected. This issue is fixed in version 0.32.7.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-78" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62943.json" }- References
-
- https://github.com/digint/btrbk/releases/tag/v0.32.7
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62943.json
- https://github.com/digint/btrbk/security/advisories/GHSA-pf45-7g54-65h5
- https://nvd.nist.gov/vuln/detail/CVE-2026-62943
- https://github.com/digint/btrbk/commit/29ca3c093205395bdeb9dd98677ab4139c458aec
Affected packages
Git / github.com/digint/btrbk
Affected ranges
- Type
- GIT
- Repo
- https://github.com/digint/btrbk
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0.29.0" }, { "fixed": "0.32.7" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "29ca3c093205395bdeb9dd98677ab4139c458aec" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v0.32.7", "range": [ { "fixed": "b4676b841865763901712153281de4b1291cedc6" } ], "source": "REFERENCES_TAG" } ] }