CVE-2026-12923

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM 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 — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 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(medium)
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%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
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 20× in last 7d / 101× 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.

Showing the most recent 100 of 169 total refreshes for this CVE.

  1. 2026-08-25 13:48 UTCEPSS rescore
  2. 2026-08-24 23:48 UTCEG score recompute
  3. 2026-08-24 23:48 UTCGHSA enrichment
  4. 2026-08-24 11:04 UTCEG score recompute
  5. 2026-08-24 11:04 UTCGHSA enrichment
  6. 2026-08-23 22:19 UTCGHSA enrichment
  7. 2026-08-23 09:20 UTCEG score recompute
  8. 2026-08-23 09:20 UTCGHSA enrichment
  9. 2026-08-23 00:19 UTCEPSS rescore
  10. 2026-08-22 20:36 UTCGHSA enrichment
  11. 2026-08-22 07:51 UTCEG score recompute
  12. 2026-08-22 07:51 UTCGHSA enrichment
  13. 2026-08-21 23:48 UTCEPSS rescore
  14. 2026-08-21 19:06 UTCGHSA enrichment
  15. 2026-08-21 06:21 UTCEG score recompute
  16. 2026-08-21 06:21 UTCGHSA enrichment
  17. 2026-08-20 22:55 UTCEPSS rescore
  18. 2026-08-20 17:36 UTCGHSA enrichment
  19. 2026-08-20 04:51 UTCEG score recompute
  20. 2026-08-20 04:51 UTCGHSA enrichment
  21. 2026-08-19 17:03 UTCEPSS rescore
  22. 2026-08-19 10:19 UTCGHSA enrichment
  23. 2026-08-18 21:02 UTCEG score recompute
  24. 2026-08-18 21:02 UTCGHSA enrichment
  25. 2026-08-18 13:48 UTCEPSS rescore
Show 75 more
  1. 2026-08-18 06:20 UTCGHSA enrichment
  2. 2026-08-17 16:51 UTCEG score recompute
  3. 2026-08-17 16:51 UTCGHSA enrichment
  4. 2026-08-17 03:58 UTCGHSA enrichment
  5. 2026-08-16 15:14 UTCEG score recompute
  6. 2026-08-16 15:14 UTCGHSA enrichment
  7. 2026-08-16 14:56 UTCEPSS rescore
  8. 2026-08-16 02:30 UTCEG score recompute
  9. 2026-08-16 02:30 UTCGHSA enrichment
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 13:47 UTCEG score recompute
  12. 2026-08-15 13:47 UTCGHSA enrichment
  13. 2026-08-15 01:30 UTCEPSS rescore
  14. 2026-08-15 01:02 UTCGHSA enrichment
  15. 2026-08-14 12:18 UTCGHSA enrichment
  16. 2026-08-13 23:35 UTCEG score recompute
  17. 2026-08-13 23:35 UTCGHSA enrichment
  18. 2026-08-13 22:00 UTCEPSS rescore
  19. 2026-08-13 10:44 UTCGHSA enrichment
  20. 2026-08-12 22:00 UTCEG score recompute
  21. 2026-08-12 22:00 UTCGHSA enrichment
  22. 2026-08-12 13:50 UTCEPSS rescore
  23. 2026-08-12 09:16 UTCGHSA enrichment
  24. 2026-08-11 20:32 UTCEG score recompute
  25. 2026-08-11 20:32 UTCGHSA enrichment
  26. 2026-08-11 13:42 UTCEPSS rescore
  27. 2026-08-11 07:48 UTCEG score recompute
  28. 2026-08-11 07:48 UTCGHSA enrichment
  29. 2026-08-10 23:59 UTCEPSS rescore
  30. 2026-08-10 19:04 UTCGHSA enrichment
  31. 2026-08-10 06:20 UTCGHSA enrichment
  32. 2026-08-09 17:36 UTCEG score recompute
  33. 2026-08-09 17:36 UTCGHSA enrichment
  34. 2026-08-09 13:46 UTCEPSS rescore
  35. 2026-08-09 04:53 UTCGHSA enrichment
  36. 2026-08-08 16:09 UTCGHSA enrichment
  37. 2026-08-08 03:25 UTCEG score recompute
  38. 2026-08-08 03:25 UTCGHSA enrichment
  39. 2026-08-07 14:41 UTCGHSA enrichment
  40. 2026-08-07 01:58 UTCEG score recompute
  41. 2026-08-07 01:58 UTCGHSA enrichment
  42. 2026-08-06 13:46 UTCEPSS rescore
  43. 2026-08-06 13:13 UTCGHSA enrichment
  44. 2026-08-06 00:29 UTCEG score recompute
  45. 2026-08-06 00:29 UTCGHSA enrichment
  46. 2026-08-05 19:17 UTCEPSS rescore
  47. 2026-08-05 11:45 UTCGHSA enrichment
  48. 2026-08-04 22:03 UTCEG score recompute
  49. 2026-08-04 22:03 UTCGHSA enrichment
  50. 2026-08-04 15:09 UTCEPSS rescore
  51. 2026-08-04 10:38 UTCEPSS rescore
  52. 2026-08-04 08:40 UTCGHSA enrichment
  53. 2026-08-03 18:21 UTCEG score recompute
  54. 2026-08-03 18:21 UTCGHSA enrichment
  55. 2026-08-03 10:35 UTCEPSS rescore
  56. 2026-08-03 05:00 UTCGHSA enrichment
  57. 2026-08-02 16:15 UTCGHSA enrichment
  58. 2026-08-02 03:31 UTCGHSA enrichment
  59. 2026-08-01 14:47 UTCEG score recompute
  60. 2026-08-01 14:47 UTCGHSA enrichment
  61. 2026-08-01 04:15 UTCEPSS rescore
  62. 2026-08-01 02:03 UTCGHSA enrichment
  63. 2026-07-31 12:41 UTCEG score recompute
  64. 2026-07-31 12:41 UTCGHSA enrichment
  65. 2026-07-30 23:48 UTCEG score recompute
  66. 2026-07-30 23:48 UTCGHSA enrichment
  67. 2026-07-30 16:27 UTCEPSS rescore
  68. 2026-07-30 11:04 UTCEG score recompute
  69. 2026-07-30 11:04 UTCGHSA enrichment
  70. 2026-07-30 01:30 UTCEPSS rescore
  71. 2026-07-29 22:08 UTCGHSA enrichment
  72. 2026-07-29 08:37 UTCGHSA enrichment
  73. 2026-07-28 18:10 UTCEG score recompute
  74. 2026-07-28 18:10 UTCGHSA enrichment
  75. 2026-07-28 15:36 UTCEPSS rescore

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 1% probability of exploitation in the next 30 days, which ranks it in the top 58.2% of all scored CVEs.
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.

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