GHSA-gv9p-wq55-477w

GHSA-gv9p-wq55-477w PUBLISHED CVSS 5.5 MEDIUM

Record from GitHub Advisory Database · Published March 21, 2026

The Multi Functional Flexi Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `arv_lb[message]` parameter in all versions up to, and including, 1.2 due to insufficient input sanitization and output escaping. This is due to the `arv_lb_options_val()` sanitize callback returning user input without any sanitization, and the stored `message` value being output in the `genLB()` function without escaping. This makes it possible for authenticated attackers, with Administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses a page or post with the lightbox enabled.

Risk scores

CVSS 3.1

5.5

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

Timeline

Mar 21, 2026 CVE Published
May 1, 2026 Security Advisory

Query this with the API

The same record, from the CLI:

vulnetix vdb vuln GHSA-gv9p-wq55-477w
vulnetix vdb fixes GHSA-gv9p-wq55-477w

Or with curl, using the org id and key from your account page:

curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/GHSA-gv9p-wq55-477w/fixes/registry"

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References

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