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TI-2026-69452 Aliases CVE-2026-86826

BackWPup Unauthenticated Data Disclosure via Restore Directory on NGINX

Priority LOW 26CWE-200Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-200.

Summary

The BackWPup WordPress plugin before 5.7.7 does not properly restrict web access to its working directory used during backup restores (CWE-200). On webservers that ignore .htaccess rules, such as NGINX, an unauthenticated attacker can download the full backup archive left behind by an interrupted restore, including the database dump, site files, credentials and secret keys. 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 web access to the working directory it uses during backup restores, allowing unauthenticated attackers, on webservers that do not honour .htaccess rules such as NGINX, to download the full backup archive (database dump and site files, including credentials and secret keys) left behind by an interrupted restore.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00216 12th 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
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
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, the fixed version.

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-2026-69454 Path traversal in BackWPup WordPress plugin enables file writesPriority LOW 32
    • TI-2026-69453 Missing authorization in BackWPup lets attackers run backup jobsPriority LOW 29
    Show all 3 records →

Timeline

  1. 2026-10-08 Threatist record created from CVE-2026-86826

References

Exploit 1

Sources

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