CVE-2023-54346

HighPublic PoC

Published: 05 May 2026

Published

05 May 2026

Modified

05 May 2026

KEV Added

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Patch

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CVSS Score v4 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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

EPSS Score 0.0031 22.8th percentile

Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2023-54346 is a high-severity Insertion of Sensitive Information into Externally-Accessible File or Directory (CWE-538) vulnerability in Backupbliss (inferred from references). Its CVSS base score is 8.7 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 22.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and CP-9 (System Backup).

Deeper analysis

CVE-2023-54346 is an information disclosure vulnerability (CWE-538) affecting the WordPress plugin Backup Migration version 1.2.8, assigned a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N). The vulnerability enables unauthenticated attackers to download complete database backups through predictable file paths. Attackers can enumerate backup directories by accessing exposed configuration files and complete logs, allowing them to construct direct download URLs for sensitive backup archives that contain full database dumps.

Unauthenticated remote attackers can exploit this issue with low complexity, requiring no privileges or user interaction. Successful exploitation grants high confidentiality impact by exposing sensitive data such as full database contents, while integrity and availability remain unaffected.

Advisories from VulnCheck and a proof-of-concept exploit on Exploit-DB document the unauthenticated database backup download capability. Additional references include the plugin's vendor site at backupbliss.com and the affected version download at downloads.wordpress.org/plugin/backup-backup.1.2.8.zip.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2023-60568

Vulnerability details

WordPress Plugin Backup Migration 1.2.8 contains an information disclosure vulnerability that allows unauthenticated attackers to download complete database backups by accessing predictable file paths. Attackers can enumerate backup directories through configuration files and complete logs, then construct direct download URLs…

to retrieve sensitive backup archives containing full database dumps.

CWE(s): CWE-538

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1005 Data from Local System Collection

Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.

attack.mitre.org →

Why these techniques?

Vulnerability in public-facing WordPress plugin enables unauthenticated remote file access and direct exfiltration of database backup contents via predictable paths.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0