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WP Data Access plugin lets unauthenticated users modify data

Priority LOW 30CWE-863Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-863.

Summary

The WP Data Access WordPress plugin before 5.5.77 does not correctly check authorization on one of its application REST endpoints (CWE-863). The endpoint verifies only read permission before performing a write. An unauthenticated remote attacker can modify data in an application exposed for anonymous read access, even when the administrator has disabled update actions. The references include a link to an exploit.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The WP Data Access WordPress plugin before 5.5.77 does not correctly check authorization on one of its application REST endpoints, verifying only read permission before performing a write, which allows unauthenticated attackers to modify data in an application exposed for anonymous read access even when update actions have been disabled by the administrator.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00239 15th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed WP Data Access (Unknown): 5.5.77

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
UnknownWP Data Accessbefore 5.5.775.5.77Patch availableCNA
  • WP Data Access VendorUnknown Affected before 5.5.77 Fixed in 5.5.77 Patch available CNA

Remediation

Update WP Data Access to version 5.5.77, the fixed version.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA WP Data Access (Unknown) Fixed in 5.5.77

Timeline

  1. 2026-10-14 Threatist record created from CVE-2026-106098
  2. 2026-10-14 Alias added: GHSA-v8fc-v39p-fp8c
  3. 2026-10-14 CVSS score added · CISA ADP
  4. 2026-10-14 Weakness changed · CISA ADP
  5. 2026-10-14 CISA SSVC decision points changed

References

Sources