Read the docs
TI-2026-69454 Aliases CVE-2026-86828

Path traversal in BackWPup WordPress plugin enables file writes

Priority LOW 32CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

The BackWPup WordPress plugin before 5.7.7 does not restrict the destination path of files extracted during a backup restore when its fallback archive library is used (CWE-22). A user with high privileges can write files outside the intended restore directory, which can lead to remote code execution. A public exploit link is listed in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

The BackWPup WordPress plugin before 5.7.7 does not properly restrict the destination path of files extracted during a backup restore when its fallback archive library is used, allowing high-privileged users to write files outside the intended restore directory, potentially leading to remote code execution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00421 36th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed BackWPup (Unknown): 5.7.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownBackWPupbefore 5.7.75.7.7Patch availableCNA
  • BackWPup VendorUnknown Affected before 5.7.7 Fixed in 5.7.7 Patch available CNA

Remediation

Update BackWPup to version 5.7.7 or later, which fixes the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA BackWPup (Unknown) Fixed in 5.7.7

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    BackWPup 5.7.7

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2026-69453 Missing authorization in BackWPup lets attackers run backup jobsPriority LOW 29
    • TI-2026-69452 BackWPup Unauthenticated Data Disclosure via Restore Directory on NGINXPriority LOW 26
    Show all 3 records →

Timeline

  1. 2026-10-08 Threatist record created from CVE-2026-86828

References

Exploit 1

Sources

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