CVE-2026-28181

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-13. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.5Exploit: None knownExposed services: Not assessed

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

Subscriber Broken Access Control in AcyMailing SMTP Newsletter <= 10.11.1 versions.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
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
0.3%
EPSS %ILE
25th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

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 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

August 13, 2026

Last Modified

August 14, 2026

References (1)

Vendor Advisories for CVE-2026-28181(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 13× 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 144 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-28181?
CVE-2026-28181 is a medium vulnerability published on August 13, 2026. Subscriber Broken Access Control in AcyMailing SMTP Newsletter <= 10.11.1 versions.
When was CVE-2026-28181 disclosed?
CVE-2026-28181 was first published on August 13, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-28181 actively exploited?
CVE-2026-28181 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-28181?
CVE-2026-28181 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-28181?
No fix for CVE-2026-28181 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-2026-28181 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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