Cross-Site Scripting (XSS) in LightPress Lightbox (WordPress plugin) (CVE-2026-4379)
Summary
Cross-site scripting in LightPress Lightbox (WordPress plugin) (CVE-2026-4379). Risk of unauthorized operations or information disclosure. Exploitable via group.
Original description
The description as published by the source.
The LightPress Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the group attribute in the [gallery] shortcode in all versions up to, and including, 2.3.4. This is due to the plugin modifying gallery shortcode output to include the group attribute value without proper escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-4379 has been found in LightPress Lightbox (WordPress plugin).
Attackers can target a specific entry point like group over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 6.4/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "LightPress Lightbox (WordPress plugin) CVE-2026-4379" on the vendor's site.
CVE-2026-4379 (LightPress Lightbox (WordPress plugin)) — CWE-79 / CVSS v3 6.4
Attack vector: remote (network-reachable) / no user interaction
Attack surface: group
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in LightPress Lightbox (WordPress plugin). Attackers reach the vulnerable code path via group.
Check the vendor advisory for the affected versions of LightPress Lightbox (WordPress plugin). Attack surface: group.
Severity: Medium (CVSS 6.4/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで LightPress Lightbox (WordPress plugin) を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。