CVE-2026-12923

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-01. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The Youtube Showcase plugin for WordPress is vulnerable to Arbitrary Function Call in versions up to and including 4.0.3. This is due to insufficient validation of the 'path' parameter in the emd_delete_file() AJAX handler in includes/common-functions.php. The user-supplied value is passed through sanitize_text_field(), has its trailing '_PLUGIN_DIR' substring stripped, and is then invoked as a PHP function name with no arguments via $sess_name(). The handler is gated only by a nonce — no current_user_can() check is present — and the nonce is emitted on any front-end page that renders a form shortcode containing file fields. This makes it possible for authenticated attackers, with Subscriber-level access and above, to invoke arbitrary zero-argument PHP functions (such as phpinfo, phpversion, get_defined_vars, error_get_last), resulting in sensitive information disclosure and potential further compromise depending on the functions available in the environment.

CVSS v3
7.5
EG Score
7.5(high)
EPSS
23.8%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 1, 2026

References (5)

Vendor Advisories for CVE-2026-12923(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 31× in last 7d / 31× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-07 01:34 UTCEG score recompute
  2. 2026-07-07 01:34 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 12:47 UTCEG score recompute
  5. 2026-07-06 12:47 UTCGHSA enrichment
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-06 00:03 UTCEG score recompute
  8. 2026-07-06 00:03 UTCGHSA enrichment
  9. 2026-07-05 11:18 UTCEG score recompute
  10. 2026-07-05 11:18 UTCGHSA enrichment
  11. 2026-07-05 02:30 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 22:34 UTCEG score recompute
  14. 2026-07-04 22:34 UTCGHSA enrichment
  15. 2026-07-04 09:50 UTCEG score recompute
  16. 2026-07-04 09:50 UTCGHSA enrichment
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-03 21:04 UTCEG score recompute
  19. 2026-07-03 21:03 UTCGHSA enrichment
  20. 2026-07-03 08:19 UTCEG score recompute
  21. 2026-07-03 08:19 UTCGHSA enrichment
  22. 2026-07-02 19:34 UTCEG score recompute
  23. 2026-07-02 19:34 UTCGHSA enrichment
  24. 2026-07-02 06:50 UTCEG score recompute
  25. 2026-07-02 06:50 UTCGHSA enrichment
Show 6 more
  1. 2026-07-01 18:06 UTCEG score recompute
  2. 2026-07-01 18:06 UTCGHSA enrichment
  3. 2026-07-01 15:06 UTCEPSS rescore
  4. 2026-07-01 15:06 UTCEPSS rescore
  5. 2026-07-01 05:22 UTCEG score recompute
  6. 2026-07-01 05:20 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-12923?
CVE-2026-12923 is a high vulnerability published on July 1, 2026. The Youtube Showcase plugin for WordPress is vulnerable to Arbitrary Function Call in versions up to and including 4.0.3. This is due to insufficient validation of the 'path' parameter in the emddeletefile() AJAX handler in includes/common-functions.php. The user-supplied value is passed through…
When was CVE-2026-12923 disclosed?
CVE-2026-12923 was first published in the National Vulnerability Database on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12923 actively exploited?
CVE-2026-12923 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12923?
CVE-2026-12923 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-12923?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12923, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-12923

Explore →

Is Your Infrastructure Affected by CVE-2026-12923?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs