CVE-2026-124029
Kopia through 0.23.1 Path Traversal in Snapshot Restore via Directory Entry Names
Kopia through 0.23.1 contains a path traversal vulnerability in copyDirectoryContent that allows users with repository write access to escape the restore directory via crafted entry names. Attackers can create snapshots whose directory manifest entries are named '..', so victims restoring with default options write attacker-chosen content outside the restore directory.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| kopia kopia github.com/kopia/kopia
golang |
≥ 0; ≤ 0.23.1 (affected, semver)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.9 medium |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 5.7 medium |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N | CNA: VulnCheck |
| 4.0 / 6.9 medium |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 5.7 medium |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N | NVD: [email protected] |
Exploit evidence
- https://github.com/kopia/kopia/issues/5700
exploit · ADP: CISA-ADP
References
- https://github.com/kopia/kopia/issues/5700CNA: VulnCheck · issue-tracking
- https://github.com/kopia/kopiaCNA: VulnCheck · product
- https://github.com/kopia/kopia/blob/v0.23.1/snapshot/restore/restore.go#L397CNA: VulnCheck · technical-description
- https://www.vulncheck.com/advisories/kopia-through-0.23.1-path-traversal-in-snapshot-restore-via-directory-entry-namesCNA: VulnCheck · third-party-advisory
- https://github.com/kopia/kopia/issues/5700ADP: CISA-ADP · exploit
- https://github.com/kopia/kopia[email protected]
- https://github.com/kopia/kopia/blob/v0.23.1/snapshot/restore/restore.go#L397[email protected]
- https://github.com/kopia/kopia/issues/5700[email protected]
- https://www.vulncheck.com/advisories/kopia-through-0.23.1-path-traversal-in-snapshot-restore-via-directory-entry-names[email protected]
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