Read the docs
TI-2026-49358 Aliases CVE-2026-70657GHSA-x5pq-m9p8-f4vx

Copyparty: file/dirkey confusion

Priority LOW 20CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.

Summary

Copyparty is a portable file server. Prior to 1.20.17, copyparty volumes with the dk or dks directory-key flag combined with the fk or fka file-key flag can convert a valid file key into a directory key, granting read access to the containing folder. This vulnerability was only reachable if both types of keys (filekeys and dirkeys) were manually enabled in the volume flags simultaneously. This issue is fixed in version 1.20.17.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00331 26th percentileScored 2026-11-07
Fix Fixed copyparty (9001): 1.20.17copyparty (PyPI): 1.20.17

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
9001copypartybefore 1.20.171.20.17Patch availableCNA
—copyparty (PyPI)before 1.20.171.20.17Patch availableGHSA-x5pq-m9p8-f4vx
  • copyparty Vendor9001 Affected before 1.20.17 Fixed in 1.20.17 Patch available CNA
  • copyparty (PyPI) Vendor— Affected before 1.20.17 Fixed in 1.20.17 Patch available GHSA-x5pq-m9p8-f4vx

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:9001:copyparty:*:*:*:*:*:*:*:*——9001
  • cpe:2.3:a:9001:copyparty:*:*:*:*:*:*:*:* Versions — — ·9001

Remediation

  • Fix · CNA copyparty (9001) Fixed in 1.20.17
  • Fix · GHSA-x5pq-m9p8-f4vx copyparty (PyPI) Fixed in 1.20.17 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-70657
  2. 2026-10-03 Alias added: GHSA-x5pq-m9p8-f4vx

References

Other 4

  • TI-2025-34551 Copyparty is vulnerable to Regex Denial of Service (ReDoS) attacks through "Recent Uploads" page CVSS 3.1HIGH 7.5
  • TI-2023-19082 Path traversal in copyparty CVSS 3.1HIGH 7.5
  • TI-2023-21990 Cross Site Scripting vulnerability in copyparty before 1.9.2 allows a local attacker to… CVSS 3.1HIGH 7.8
  • TI-2023-19881 copyparty vulnerable to reflected cross-site scripting via k304 parameter CVSS 3.1MEDIUM 6.3
  • TI-2025-34228 copyparty has a DOM-Based XSS vulnerability when displaying multimedia metadata CVSS 3.1MEDIUM 6.1
  • TI-2025-20002 copyparty renders unsanitized filenames as HTML when user uploads empty files CVSS 3.1MEDIUM 6.1
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences