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CVE Record

CVE-2023-4637: WPvivid <= 0.9.94 - Missing Authorization

The WPvivid plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the restore() and get_restore_progress() function in versions up to, and including, 0.9.94. This makes it possible for unauthenticated attackers to invoke these functions and obtain full file paths if they have access to a back-up ID.

MediumCVSS 4.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

WPvivid for WordPress had missing authorization checks in backup restore-related functions through version 0.9.94. An attacker with a valid backup ID could trigger those functions and learn full server file paths. This is mainly an information disclosure issue, not confirmed remote code execution.

Executive priority

Treat as a moderate WordPress plugin exposure. Prioritize patching internet-facing WordPress sites, especially where backups contain sensitive paths or operational details. It is less urgent than code execution flaws, but should not remain unresolved.

Technical view

CVE-2023-4637 is CWE-862 in WPvivid Backup, Migration & Staging. The restore() and get_restore_progress() functions lacked capability checks in affected versions. The CVE text says unauthenticated attackers may invoke them with a backup ID, while the CVSS vector lists PR:L, so privilege requirements are not fully consistent.

Likely exposure

Exposure is limited to WordPress sites running WPvivid Backup, Migration & Staging version 0.9.94 or earlier. Practical risk depends on whether attackers can reach the vulnerable actions and obtain or guess a valid backup ID.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. Available sources describe unauthorized access to restore-related functions and possible disclosure of full file paths, contingent on backup ID access.

Researcher notes

Key uncertainty is access requirement: the description mentions unauthenticated attackers with a backup ID, while CVSS lists low privileges. Validate against the referenced WordPress Trac changeset and local plugin version before declaring exploitability.

Mitigation direction

  • Inventory WordPress sites using WPvivid and record installed plugin versions.
  • Update affected WPvivid installations according to vendor or WordPress plugin guidance.
  • Remove or protect exposed backup artifacts and backup identifiers.
  • Limit WordPress admin and plugin access to trusted users only.
  • Monitor vendor advisories for the fixed version and related guidance.

Validation and detection

  • Confirm WPvivid is not version 0.9.94 or earlier.
  • Review plugin code or changelog for added capability checks around restore functions.
  • Check logs for unexpected restore or restore-progress requests.
  • Verify backup IDs and backup files are not publicly exposed.
  • Confirm no public route exposes sensitive backup metadata.
Prepared
Confidence
high
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · medium confidence lookup

CWE-862: Authorization and privilege behavior lookup

Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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.

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cve · low confidence lookup

CVE-2023-4637 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
4.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N2.81.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.3Medium
CVSS 3.1 vector shape for CVE-2023-4637Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
wpvividpluginsWPvivid — Backup, Migration & Staging0unaffected
Weakness

CWE details

CWE-862

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-862 · source CWE mapping

Missing Authorization

Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs