Security readout for executives and security teams
Plain-English summary
BackWPup for WordPress allowed an authenticated administrator to redirect backup output into arbitrary writable server folders. In shared hosting, that could interfere with another site by placing protective files in its root, potentially causing availability or integrity impact. This is high risk mainly where administrator accounts are compromised or not tightly controlled.
Executive priority
Prioritize remediation for WordPress estates with shared hosting, multiple sites on one server, or broad administrator access. The main concern is disruption or tampering after admin compromise rather than remote unauthenticated takeover.
Technical view
CVE-2023-5504 is a CWE-22 directory traversal issue in BackWPup through version 4.0.1 via the Log File Folder setting. The CVSS 3.1 score is 8.7 with high privileges required, no user interaction, changed scope, and high integrity and availability impact. The provided sources do not show public exploitation or KEV listing.
Likely exposure
Exposure is limited to WordPress sites running BackWPup versions up to and including 4.0.1 where an attacker has administrator-level access. Shared hosting or multi-site server environments have higher business impact because writable paths may overlap other sites.
Exploitation context
The source describes authenticated administrator abuse of the backup/log folder configuration. It does not cite active exploitation, public weaponization, or unauthenticated access. KEV is false in the supplied bundle.
Researcher notes
The vulnerability hinges on insufficient path restriction in a privileged configuration field. The source bundle includes WordPress Trac references and a changeset, but does not provide detailed patch text in the prompt. Treat exploit status as unconfirmed absent KEV or cited exploitation evidence.
Mitigation direction
- Upgrade BackWPup beyond affected versions using vendor or WordPress plugin guidance.
- Restrict and audit WordPress administrator accounts, especially on shared hosting.
- Reset BackWPup backup and log paths to intended application-owned directories.
- Review shared hosting permissions to prevent cross-site writable directory overlap.
- Remove unintended protective files only after confirming ownership and operational impact.
Validation and detection
- Inventory WordPress sites for BackWPup versions up to and including 4.0.1.
- Review BackWPup Log File Folder and backup destination settings.
- Check whether configured paths point outside expected WordPress directories.
- Audit administrator changes and backup job history around suspicious path changes.
- Inspect neighboring sites for unexpected index.php or .htaccess files.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-5504 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H2.35.8Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.7HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e830fe1e-1171-46da-8ee7-0a6654153f18?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/backwpup/trunk/inc/class-page-settings.php?rev=2818974#L457CVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3000176%40backwpup%2Ftrunk&old=2980789%40backwpup%2Ftrunk&sfp_email=&sfph_mail=CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.