CVE-2026-17553

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-09-09. A secondary CVSS source baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.2EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.2Exploit: 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 EasyCart plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 5.9.3. This is due to the ec_ajax_save_page_default_options() AJAX handler iterating over every $_POST key and passing it directly into update_option() without any allowlist, while gating the handler only on 'manage_options' OR the plugin's custom 'wpec_manager' capability. The plugin's built-in 'wpec_store_manager' role holds 'wpec_manager' but not 'manage_options', and the required nonce is emitted on frontend product/category templates that render for any user with 'wpec_manager'. This makes it possible for authenticated attackers, with Store Manager-level access and above, to elevate their privileges to administrator by updating arbitrary WordPress options such as default_role='administrator' and users_can_register='1', then self-registering a new account that is assigned the administrator role.

CVSS v3
7.2
EG Score
7.2HIGHhigh confidence
EG Risk
33
EG Risk 33/100CISA 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
Severity72% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
34th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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-2026-17553(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 26× in last 7d / 94× 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 00:26 UTCEG score recompute
  2. 2026-10-04 00:26 UTCGHSA enrichment
  3. 2026-10-03 14:25 UTCEPSS rescore
  4. 2026-10-03 10:29 UTCGHSA enrichment
  5. 2026-10-02 20:51 UTCEG score recompute
  6. 2026-10-02 20:51 UTCGHSA enrichment
  7. 2026-10-02 08:04 UTCEG score recompute
  8. 2026-10-02 08:04 UTCGHSA enrichment
  9. 2026-10-01 19:49 UTCEPSS rescore
  10. 2026-10-01 19:29 UTCGHSA enrichment
  11. 2026-10-01 05:55 UTCGHSA enrichment
  12. 2026-09-30 17:20 UTCEG score recompute
  13. 2026-09-30 17:20 UTCGHSA enrichment
  14. 2026-09-30 15:02 UTCEPSS rescore
  15. 2026-09-30 03:52 UTCEG score recompute
  16. 2026-09-30 03:52 UTCGHSA enrichment
  17. 2026-09-29 15:20 UTCEPSS rescore
  18. 2026-09-29 15:17 UTCGHSA enrichment
  19. 2026-09-29 02:43 UTCEG score recompute
  20. 2026-09-29 02:43 UTCGHSA enrichment
  21. 2026-09-28 14:07 UTCEG score recompute
  22. 2026-09-28 14:07 UTCGHSA enrichment
  23. 2026-09-28 13:51 UTCEPSS rescore
  24. 2026-09-28 01:32 UTCEG score recompute
  25. 2026-09-28 01:32 UTCGHSA enrichment
Show 69 more
  1. 2026-09-27 13:47 UTCEPSS rescore
  2. 2026-09-27 12:57 UTCGHSA enrichment
  3. 2026-09-27 00:22 UTCEG score recompute
  4. 2026-09-27 00:21 UTCGHSA enrichment
  5. 2026-09-26 15:58 UTCEPSS rescore
  6. 2026-09-26 11:38 UTCEG score recompute
  7. 2026-09-26 11:38 UTCGHSA enrichment
  8. 2026-09-25 23:01 UTCGHSA enrichment
  9. 2026-09-25 10:24 UTCGHSA enrichment
  10. 2026-09-24 21:48 UTCEG score recompute
  11. 2026-09-24 21:48 UTCGHSA enrichment
  12. 2026-09-24 09:05 UTCGHSA enrichment
  13. 2026-09-23 20:30 UTCEG score recompute
  14. 2026-09-23 20:30 UTCGHSA enrichment
  15. 2026-09-23 07:55 UTCGHSA enrichment
  16. 2026-09-22 19:18 UTCEG score recompute
  17. 2026-09-22 19:18 UTCGHSA enrichment
  18. 2026-09-22 06:37 UTCEG score recompute
  19. 2026-09-22 06:37 UTCGHSA enrichment
  20. 2026-09-21 18:02 UTCGHSA enrichment
  21. 2026-09-21 05:26 UTCEG score recompute
  22. 2026-09-21 05:25 UTCGHSA enrichment
  23. 2026-09-20 16:48 UTCGHSA enrichment
  24. 2026-09-20 04:06 UTCEG score recompute
  25. 2026-09-20 04:06 UTCGHSA enrichment
  26. 2026-09-19 15:30 UTCGHSA enrichment
  27. 2026-09-19 02:52 UTCEG score recompute
  28. 2026-09-19 02:52 UTCGHSA enrichment
  29. 2026-09-18 19:27 UTCEPSS rescore
  30. 2026-09-18 14:17 UTCGHSA enrichment
  31. 2026-09-18 01:39 UTCEG score recompute
  32. 2026-09-18 01:39 UTCGHSA enrichment
  33. 2026-09-17 13:04 UTCGHSA enrichment
  34. 2026-09-17 00:29 UTCEG score recompute
  35. 2026-09-17 00:29 UTCGHSA enrichment
  36. 2026-09-16 14:07 UTCEPSS rescore
  37. 2026-09-16 11:53 UTCEG score recompute
  38. 2026-09-16 11:53 UTCGHSA enrichment
  39. 2026-09-16 05:14 UTCEPSS rescore
  40. 2026-09-15 23:18 UTCGHSA enrichment
  41. 2026-09-15 10:21 UTCEG score recompute
  42. 2026-09-15 10:21 UTCGHSA enrichment
  43. 2026-09-14 21:44 UTCGHSA enrichment
  44. 2026-09-14 09:09 UTCGHSA enrichment
  45. 2026-09-13 20:34 UTCEG score recompute
  46. 2026-09-13 20:34 UTCGHSA enrichment
  47. 2026-09-13 16:46 UTCEPSS rescore
  48. 2026-09-13 07:59 UTCGHSA enrichment
  49. 2026-09-12 19:24 UTCEG score recompute
  50. 2026-09-12 19:24 UTCGHSA enrichment
  51. 2026-09-12 15:00 UTCEPSS rescore
  52. 2026-09-12 06:49 UTCGHSA enrichment
  53. 2026-09-11 18:14 UTCEG score recompute
  54. 2026-09-11 18:14 UTCGHSA enrichment
  55. 2026-09-11 14:52 UTCEPSS rescore
  56. 2026-09-11 09:36 UTCEPSS rescore
  57. 2026-09-11 05:38 UTCGHSA enrichment
  58. 2026-09-10 17:02 UTCEG score recompute
  59. 2026-09-10 17:02 UTCGHSA enrichment
  60. 2026-09-10 09:34 UTCEPSS rescore
  61. 2026-09-10 04:27 UTCGHSA enrichment
  62. 2026-09-09 15:51 UTCGHSA enrichment
  63. 2026-09-09 14:28 UTCEG score recompute
  64. 2026-09-09 14:28 UTCGHSA enrichment
  65. 2026-09-09 13:37 UTCEG score recompute
  66. 2026-09-09 13:37 UTCGHSA enrichment
  67. 2026-09-09 04:37 UTCEG score recompute
  68. 2026-09-09 03:43 UTCEG score recompute
  69. 2026-09-09 03:41 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-17553?
CVE-2026-17553 is a high vulnerability published on September 9, 2026. The WP EasyCart plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 5.9.3. This is due to the ecajaxsavepagedefaultoptions() AJAX handler iterating over every $POST key and passing it directly into updateoption() without any allowlist, while gating the…
When was CVE-2026-17553 disclosed?
CVE-2026-17553 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-2026-17553 actively exploited?
CVE-2026-17553 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (34th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-17553?
CVE-2026-17553 has a CVSS base score of 7.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-17553?
No fix for CVE-2026-17553 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-2026-17553 are linked in the Vendor Advisories panel on this page.

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