CVE-2026-12956

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-09. A secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.3Exploit: None knownExposed services: Not assessed

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

The WP Event Solution (Eventin) plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 4.1.22 via the create_item() handler for the /wp-json/eventin/v2/orders REST endpoint. The endpoint's create_item_permissions_check() function only verifies a wp_rest nonce (which is leaked to every visitor through the etn-public script's localized_data_obj on every frontend page) and accepts a user-supplied 'status' value in prepare_item_for_database() with no whitelist validation. This makes it possible for unauthenticated attackers to create etn-order posts with status='completed' that are counted as sold by etn_get_sold_tickets_by_event(); because the auto-cleanup wp_schedule_single_event() in create_item() only fires for status='pending' orders, the forged completed orders persist indefinitely and exhaust ticket inventory.

CVSS v3
5.3
EG Score
5.3MEDIUMhigh confidence
EG Risk
39
EG Risk 39/100CISA SSVC

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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
13th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 9, 2026

Last Modified

September 9, 2026

References (7)

Vendor Advisories for CVE-2026-12956(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 18× in last 7d / 69× 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. 2026-10-04 23:21 UTCEPSS rescore
  2. 2026-10-04 23:16 UTCGHSA enrichment
  3. 2026-10-03 22:04 UTCEG score recompute
  4. 2026-10-03 22:04 UTCGHSA enrichment
  5. 2026-10-03 14:25 UTCEPSS rescore
  6. 2026-10-02 20:51 UTCEG score recompute
  7. 2026-10-02 20:51 UTCGHSA enrichment
  8. 2026-10-01 19:49 UTCEPSS rescore
  9. 2026-10-01 19:29 UTCGHSA enrichment
  10. 2026-09-30 17:20 UTCEG score recompute
  11. 2026-09-30 17:20 UTCGHSA enrichment
  12. 2026-09-30 15:02 UTCEPSS rescore
  13. 2026-09-29 15:20 UTCEPSS rescore
  14. 2026-09-29 15:16 UTCEG score recompute
  15. 2026-09-29 15:16 UTCGHSA enrichment
  16. 2026-09-28 14:04 UTCEG score recompute
  17. 2026-09-28 14:04 UTCGHSA enrichment
  18. 2026-09-28 13:50 UTCEPSS rescore
  19. 2026-09-27 12:52 UTCEG score recompute
  20. 2026-09-27 12:51 UTCGHSA enrichment
  21. 2026-09-26 15:58 UTCEPSS rescore
  22. 2026-09-26 11:38 UTCEG score recompute
  23. 2026-09-26 11:38 UTCGHSA enrichment
  24. 2026-09-25 10:03 UTCEG score recompute
  25. 2026-09-25 10:03 UTCGHSA enrichment
Show 44 more
  1. 2026-09-24 08:52 UTCEG score recompute
  2. 2026-09-24 08:52 UTCGHSA enrichment
  3. 2026-09-23 13:47 UTCEPSS rescore
  4. 2026-09-23 07:41 UTCEG score recompute
  5. 2026-09-23 07:41 UTCGHSA enrichment
  6. 2026-09-22 06:30 UTCEG score recompute
  7. 2026-09-22 06:30 UTCGHSA enrichment
  8. 2026-09-21 05:18 UTCEG score recompute
  9. 2026-09-21 05:18 UTCGHSA enrichment
  10. 2026-09-20 20:15 UTCEPSS rescore
  11. 2026-09-20 04:05 UTCEG score recompute
  12. 2026-09-20 04:05 UTCGHSA enrichment
  13. 2026-09-19 02:53 UTCEG score recompute
  14. 2026-09-19 02:53 UTCGHSA enrichment
  15. 2026-09-18 19:27 UTCEPSS rescore
  16. 2026-09-18 01:42 UTCEG score recompute
  17. 2026-09-18 01:42 UTCGHSA enrichment
  18. 2026-09-17 00:31 UTCEG score recompute
  19. 2026-09-17 00:31 UTCGHSA enrichment
  20. 2026-09-16 05:14 UTCEPSS rescore
  21. 2026-09-15 23:19 UTCEG score recompute
  22. 2026-09-15 23:19 UTCGHSA enrichment
  23. 2026-09-14 21:50 UTCGHSA enrichment
  24. 2026-09-13 20:38 UTCEG score recompute
  25. 2026-09-13 20:38 UTCGHSA enrichment
  26. 2026-09-13 16:46 UTCEPSS rescore
  27. 2026-09-12 19:27 UTCEG score recompute
  28. 2026-09-12 19:26 UTCGHSA enrichment
  29. 2026-09-12 15:00 UTCEPSS rescore
  30. 2026-09-11 18:15 UTCEG score recompute
  31. 2026-09-11 18:15 UTCGHSA enrichment
  32. 2026-09-11 14:52 UTCEPSS rescore
  33. 2026-09-11 09:36 UTCEPSS rescore
  34. 2026-09-10 17:03 UTCEG score recompute
  35. 2026-09-10 17:03 UTCGHSA enrichment
  36. 2026-09-10 09:34 UTCEPSS rescore
  37. 2026-09-09 15:51 UTCGHSA enrichment
  38. 2026-09-09 14:28 UTCEG score recompute
  39. 2026-09-09 14:28 UTCGHSA enrichment
  40. 2026-09-09 14:08 UTCEG score recompute
  41. 2026-09-09 14:08 UTCGHSA enrichment
  42. 2026-09-09 03:19 UTCEG score recompute
  43. 2026-09-09 02:32 UTCEG score recompute
  44. 2026-09-09 02:31 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-12956?
CVE-2026-12956 is a medium vulnerability published on September 9, 2026. The WP Event Solution (Eventin) plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 4.1.22 via the createitem() handler for the /wp-json/eventin/v2/orders REST endpoint. The endpoint's createitempermissionscheck() function only verifies a wprest nonce…
When was CVE-2026-12956 disclosed?
CVE-2026-12956 was first published on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12956 actively exploited?
CVE-2026-12956 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-12956?
CVE-2026-12956 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-12956?
No fix for CVE-2026-12956 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-12956 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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