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
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)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
23.2%
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 8× in last 7d / 58× 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. 2026-07-24 14:17 UTCEPSS rescore
  2. 2026-07-23 14:18 UTCEPSS rescore
  3. 2026-07-23 03:05 UTCEG score recompute
  4. 2026-07-22 14:08 UTCEPSS rescore
  5. 2026-07-21 15:24 UTCEPSS rescore
  6. 2026-07-20 17:08 UTCEPSS rescore
  7. 2026-07-19 02:28 UTCEPSS rescore
  8. 2026-07-18 10:04 UTCEPSS rescore
  9. 2026-07-17 03:52 UTCGHSA enrichment
  10. 2026-07-16 17:02 UTCEPSS rescore
  11. 2026-07-16 15:08 UTCGHSA enrichment
  12. 2026-07-16 02:24 UTCGHSA enrichment
  13. 2026-07-15 16:57 UTCEPSS rescore
  14. 2026-07-15 13:39 UTCGHSA enrichment
  15. 2026-07-15 02:00 UTCEPSS rescore
  16. 2026-07-15 00:54 UTCGHSA enrichment
  17. 2026-07-14 12:10 UTCGHSA enrichment
  18. 2026-07-13 23:26 UTCGHSA enrichment
  19. 2026-07-13 22:30 UTCEPSS rescore
  20. 2026-07-13 10:42 UTCGHSA enrichment
  21. 2026-07-13 06:12 UTCEPSS rescore
  22. 2026-07-12 21:50 UTCGHSA enrichment
  23. 2026-07-12 09:06 UTCGHSA enrichment
  24. 2026-07-12 05:46 UTCEPSS rescore
  25. 2026-07-11 20:22 UTCGHSA enrichment
Show 33 more
  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-11 07:38 UTCGHSA enrichment
  3. 2026-07-10 18:54 UTCGHSA enrichment
  4. 2026-07-10 06:10 UTCGHSA enrichment
  5. 2026-07-09 19:10 UTCEPSS rescore
  6. 2026-07-09 17:25 UTCGHSA enrichment
  7. 2026-07-09 04:40 UTCGHSA enrichment
  8. 2026-07-08 15:55 UTCGHSA enrichment
  9. 2026-07-08 15:15 UTCEPSS rescore
  10. 2026-07-08 15:15 UTCEPSS rescore
  11. 2026-07-08 03:11 UTCGHSA enrichment
  12. 2026-07-07 14:20 UTCGHSA enrichment
  13. 2026-07-07 13:46 UTCEPSS rescore
  14. 2026-07-07 01:34 UTCGHSA enrichment
  15. 2026-07-06 16:27 UTCEPSS rescore
  16. 2026-07-06 12:47 UTCGHSA enrichment
  17. 2026-07-06 02:23 UTCEPSS rescore
  18. 2026-07-06 00:03 UTCGHSA enrichment
  19. 2026-07-05 11:18 UTCGHSA enrichment
  20. 2026-07-05 02:30 UTCEPSS rescore
  21. 2026-07-05 02:30 UTCEPSS rescore
  22. 2026-07-04 22:34 UTCGHSA enrichment
  23. 2026-07-04 09:50 UTCGHSA enrichment
  24. 2026-07-04 06:31 UTCEPSS rescore
  25. 2026-07-03 21:03 UTCGHSA enrichment
  26. 2026-07-03 08:19 UTCGHSA enrichment
  27. 2026-07-02 19:34 UTCGHSA enrichment
  28. 2026-07-02 06:50 UTCGHSA enrichment
  29. 2026-07-01 18:06 UTCGHSA enrichment
  30. 2026-07-01 15:06 UTCEPSS rescore
  31. 2026-07-01 15:06 UTCEPSS rescore
  32. 2026-07-01 05:22 UTCEG score recompute
  33. 2026-07-01 05:20 UTCNVD updatefirst tracked

Related CVEs(same CWE)

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 23.2% 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