CVE-2026-16587

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-07-28. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

The Advanced Form Integration — Connect Forms to 200+ Apps plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.6.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the site's stored MailUp OAuth tokens in the adfoin_mailup_keys option with attacker-controlled tokens, hijacking future form-submission data to a MailUp account they control or nulling the tokens to break the integration entirely. This is exploitable by any authenticated user who can reach /wp-admin/profile.php, as admin_init fires for all logged-in users visiting any wp-admin page.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

July 28, 2026

Last Modified

July 28, 2026

References (6)

Vendor Advisories for CVE-2026-16587(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 / 72× 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 134 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-16587?
CVE-2026-16587 is a medium vulnerability published on July 28, 2026. The Advanced Form Integration — Connect Forms to 200+ Apps plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.6.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for…
When was CVE-2026-16587 disclosed?
CVE-2026-16587 was first published in the National Vulnerability Database on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16587 actively exploited?
CVE-2026-16587 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 88.0% of all scored CVEs.
What is the CVSS score of CVE-2026-16587?
CVE-2026-16587 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-16587?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16587, 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

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