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CVE-2026-5743

The SimpLy Gallery Block & Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via block attributes in all versions up to, and including, 3.3.3.2. This is due to insufficient input sanitization and output escaping on the sliderMaxHeight block attribute in the pgc_sgb_render_callback() function. The vulnerability exists because the pgc_sgb_sanitize_custom_css() function uses a flawed regex pattern that only removes event handlers with quoted values (e.g., onfocus="alert()")
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3547fdf5ef5cde3ea38bcb32f648b092bfab4d6d9e078d99bfa372fdd2ce3ebd
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"SimpLy Gallery","vendor":"gallerycreator","versions":[{"lessThanOrEqual":"3.3.3.1","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":6.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/problemTypes/0/descriptions/0

Source references

10 source assertions
{"url":"https://plugins.trac.wordpress.org/browser/simply-gallery-block/tags/3.3.2.2/blocks/init.php#L122"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/references/4
{"url":"https://plugins.trac.wordpress.org/browser/simply-gallery-block/tags/3.3.2.2/blocks/init.php#L142"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/references/6
{"url":"https://plugins.trac.wordpress.org/browser/simply-gallery-block/tags/3.3.2.2/blocks/init.php#L151"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/references/8
{"url":"https://plugins.trac.wordpress.org/browser/simply-gallery-block/tags/3.3.2.2/blocks/init.php#L95"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/references/1
{"url":"https://plugins.trac.wordpress.org/browser/simply-gallery-block/trunk/blocks/init.php#L122"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/references/3
{"url":"https://plugins.trac.wordpress.org/browser/simply-gallery-block/trunk/blocks/init.php#L142"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/references/5
{"url":"https://plugins.trac.wordpress.org/browser/simply-gallery-block/trunk/blocks/init.php#L151"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/references/7
{"url":"https://plugins.trac.wordpress.org/browser/simply-gallery-block/trunk/blocks/init.php#L95"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3581386%40simply-gallery-block&new=3581386%40simply-gallery-block"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/references/9
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/29b1984d-e6da-49d5-8b40-cdf2f1bcc1bb?source=cve"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5368f52c564ec479cd53dca69e4ce4d38c2195a30811c5a9f3705a51f52d2a54 · sha256:c59263506cd2fd96… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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