CVE-2026-23760

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-01-26), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 3 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 97%CVSS: 9.8Exploit: cisa kev · ssvc active · kev ransomware · epss top5pct · epss high · public exploitExposed: 0

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

SmarterTools SmarterMail versions prior to build 9511 contain an authentication bypass vulnerability in the password reset API. The force-reset-password endpoint permits anonymous requests and fails to verify the existing password or a reset token when resetting system administrator accounts. An unauthenticated attacker can supply a target administrator username and a new password to reset the account, resulting in full administrative compromise of the SmarterMail instance. NOTE: SmarterMail system administrator privileges grant the ability to execute operating system commands via built-in management functionality, effectively providing administrative (SYSTEM or root) access on the underlying host.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
97%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

January 22, 2026

Last Modified

August 4, 2026

Advisory Details (6)

Auto-updated Sep 15, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
generic

Huntress Catches SmarterMail Account Takeover Leading to RCE | Huntress

https://www.huntress.com/blog/smartermail-account-takeover-leading-to-rce
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-23760
generic

SmarterTools SmarterMail < Build 9511 Authentication Bypass via Password Reset API | Advisories | VulnCheck

https://www.vulncheck.com/advisories/smartertools-smartermail-authentication-bypass-via-password-reset-api
generic

SmarterMail Additions, Changes and Fixes

https://www.smartertools.com/smartermail/release-notes/current
generic🔴 Active Exploitation

Attackers With Decompilers Strike Again (SmarterTools SmarterMail WT-2026-0001 Auth Bypass)

https://labs.watchtowr.com/attackers-with-decompilers-strike-again-smartertools-smartermail-wt-2026-0001-auth-bypass/
generic

CODE WHITE | Red Teaming & Attack Surface Management

https://code-white.com/public-vulnerability-list/#authenticationserviceforceresetpassword-missing-authentication-in-smartermail

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 48× in last 7d / 214× 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 794 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCMaxMnMl/smartermail-CVE-2026-23760-poc
    First seen Jan 24, 2026

    CVE-2026-23760 - An authentication bypass via password reset API in SmarterMail.

    Open source ↗
  • Nucleihttp/cves/2026/CVE-2026-23760.yaml
    First seen Jan 1, 2026

    SmarterTools SmarterMail - Admin Password Reset

    Open source ↗

Frequently asked(6)

What is CVE-2026-23760?
CVE-2026-23760 is a critical vulnerability published on January 22, 2026. SmarterTools SmarterMail versions prior to build 9511 contain an authentication bypass vulnerability in the password reset API. The force-reset-password endpoint permits anonymous requests and fails to verify the existing password or a reset token when resetting system administrator accounts. An…
When was CVE-2026-23760 disclosed?
CVE-2026-23760 was first published in the National Vulnerability Database on January 22, 2026, with the most recent update on August 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23760 actively exploited?
Yes. CISA added CVE-2026-23760 to the Known Exploited Vulnerabilities catalog on January 26, 2026, affecting SmarterTools SmarterMail. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2026-23760?
CVE-2026-23760 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2026-23760?
CVE-2026-23760 affects SmarterTools SmarterMail. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2026-23760?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23760, 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

Explore the affected products and dependency analysis for CVE-2026-23760

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