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CVE Record

CVE-2023-0373: Lightweight Accordion < 1.5.15 - Contributor+ Stored XSS

The Lightweight Accordion WordPress plugin before 1.5.15 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2023-0373 affects WordPress sites using Lightweight Accordion before 1.5.15. A logged-in user with Contributor or higher privileges could store script through block options, causing it to run when someone views the affected page or post.

Executive priority

Prioritize remediation on public WordPress sites with multiple content contributors. The issue is moderate severity, but stored XSS can affect visitors, administrators, or editorial workflows when malicious content is viewed.

Technical view

The plugin failed to validate and escape some block options before rendering embedded accordion blocks. This is stored XSS, CWE-79, with CVSS 3.1 score 5.4. Attack requires low-privileged authenticated access and user interaction by a viewer.

Likely exposure

Exposure is most likely on WordPress sites running Lightweight Accordion versions earlier than 1.5.15 and allowing Contributor, Author, Editor, or Administrator users to create or edit affected accordion blocks.

Exploitation context

The WPScan reference is tagged as an exploit entry, but the provided sources do not show CISA KEV listing or confirmed active exploitation. Treat this as a credible stored XSS risk, not a confirmed in-the-wild campaign.

Researcher notes

Key constraints are authenticated Contributor-plus access and viewer interaction. The source bundle identifies the affected range as before 1.5.15, but does not provide deeper implementation details beyond unvalidated and unescaped block options.

Mitigation direction

  • Upgrade Lightweight Accordion to version 1.5.15 or later.
  • Restrict Contributor and higher content-editing access to trusted users.
  • Review pages and posts containing Lightweight Accordion blocks.
  • Check vendor and WPScan guidance for any additional remediation.
  • Remove suspicious accordion block content if found.

Validation and detection

  • Inventory WordPress sites for the Lightweight Accordion plugin.
  • Confirm installed plugin versions are 1.5.15 or later.
  • Review user roles with post or page editing permissions.
  • Inspect existing accordion blocks for unexpected scripts or markup.
  • Verify post-update rendering still escapes block option output.
Prepared
Confidence
high
Sources
3

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-79: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2023-0373 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
5.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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
2Source 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
5.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.4Medium
CVSS 3.1 vector shape for CVE-2023-0373Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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
UnknownLightweight Accordion0unaffected
Weakness

CWE details

CWE-79

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