CVE-2026-104082

HIGHPre-NVD 7.27.2
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-10-09. The CNA's CVSS baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-95887 (ENISA EUVD) · GHSA-4rp5-r82m-g6p3 (GitHub Security Advisories)Source: ENISA EUVD

7.2EG
EchelonGraph verdictPlan mitigationNo release containing the referenced fix is confirmed: check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 7.2Exploit: No code on recordExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

SmarterMail before build 9777 contains a remote code execution vulnerability that allows an attacker holding a SysAdmin-scoped access token to bypass the Volume Mount script-directory containment control by provisioning a new mail domain with an arbitrary FileStore root path inside the trusted Scripts directory via the domain-put endpoint. Attackers can disclose the Scripts path through the AddOrUpdateMount endpoint, clear the upload extension blacklist via the global-mail endpoint, then upload a malicious script through the ordinary mail file-storage upload API so that saving a CommandMount triggers RunScript before validation, resulting in a reverse shell executing as the SmarterMail service account with SYSTEM-level privileges.

CVSS v3
7.2
EG Score
7.2HIGHhigh confidence
EG Risk
48
EG Risk 48/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity72% × 45%
Impact severity (EG Severity): CVSS 7.2 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.
EPSS PROB
0.9%
EPSS %ILE
58th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.2): severity, escalated by confirmed exploitation. This CVE's 7.2 is its impact severity (EG Severity), not escalated.

EG Severity
7.2 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.9% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-26). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 9, 2026

Last Modified

October 27, 2026

Advisory Details (2)

Auto-updated Oct 9, 2026
Fix referenced — no release confirmed yet.
Web page

SmarterMail < Build 9777 SysAdmin Remote Code Execution via Volume Mount | Advisories | VulnCheck

https://www.vulncheck.com/advisories/smartermail-build-9777-sysadmin-remote-code-execution-via-volume-mount

Vendor Advisories for CVE-2026-104082(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 8× in last 7d / 49× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-02 16:43 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  2. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  3. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  4. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  5. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  6. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  7. 2026-10-27 01:43 UTCEG score recompute
  8. 2026-10-27 01:42 UTCGHSA enrichmentGHSA-4rp5-r82m-g6p3 · GitHub severity HIGH · GitHub CVSS 7.2
  9. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  10. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  11. 2026-10-25 14:56 UTCEG score recompute
  12. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  13. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  14. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  15. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  16. 2026-10-20 19:14 UTCEG score recompute
  17. 2026-10-20 19:14 UTCGHSA enrichmentGHSA-4rp5-r82m-g6p3 · GitHub severity HIGH · GitHub CVSS 7.2
  18. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  19. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  20. 2026-10-18 05:09 UTCEG score recompute
  21. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  22. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  23. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  24. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  25. 2026-10-14 16:30 UTCEG score recompute
Show 24 more
  1. 2026-10-14 16:30 UTCGHSA enrichmentGHSA-4rp5-r82m-g6p3 · GitHub severity HIGH · GitHub CVSS 7.2
  2. 2026-10-14 16:11 UTCEG score recompute
  3. 2026-10-14 16:11 UTCGHSA enrichmentGHSA-4rp5-r82m-g6p3 · GitHub severity HIGH · GitHub CVSS 7.2
  4. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  5. 2026-10-12 16:40 UTCEG score recompute
  6. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  7. 2026-10-12 14:25 UTCEG score recompute
  8. 2026-10-12 14:25 UTCGHSA enrichmentGHSA-4rp5-r82m-g6p3 · GitHub severity HIGH · GitHub CVSS 7.2
  9. 2026-10-12 13:55 UTCEG score recompute
  10. 2026-10-12 13:54 UTCGHSA enrichmentGHSA-4rp5-r82m-g6p3 · GitHub severity HIGH · GitHub CVSS 7.2
  11. 2026-10-11 20:15 UTCEG score recompute
  12. 2026-10-11 19:04 UTCGHSA enrichmentGHSA-4rp5-r82m-g6p3 · GitHub severity HIGH · GitHub CVSS 7.2
  13. 2026-10-11 18:27 UTCEG score recompute
  14. 2026-10-11 15:01 UTCEG score recompute
  15. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  16. 2026-10-11 06:37 UTCEG score recompute
  17. 2026-10-11 06:37 UTCGHSA enrichmentGHSA-4rp5-r82m-g6p3 · GitHub severity HIGH · GitHub CVSS 7.2
  18. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  19. 2026-10-10 18:10 UTCGHSA enrichmentGHSA-4rp5-r82m-g6p3 · GitHub severity HIGH · GitHub CVSS 7.2
  20. 2026-10-10 05:43 UTCEG score recompute
  21. 2026-10-10 05:42 UTCGHSA enrichmentGHSA-4rp5-r82m-g6p3 · GitHub severity HIGH · GitHub CVSS 7.2
  22. 2026-10-09 16:33 UTCEG score recompute
  23. 2026-10-09 15:24 UTCEG score recomputeFirst assessed: 7.2 HIGH
  24. 2026-10-09 15:23 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-104082?
CVE-2026-104082 is a high-severity vulnerability; its CVE record was published on October 9, 2026. SmarterMail before build 9777 contains a remote code execution vulnerability that allows an attacker holding a SysAdmin-scoped access token to bypass the Volume Mount script-directory containment control by provisioning a new mail domain with an arbitrary FileStore root path inside the trusted…
When was CVE-2026-104082 made public?
CVE-2026-104082 was made public on October 8, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on October 9, 2026. EchelonGraph's copy of the record carries a last-modified date of October 27, 2026; the record at its source may have been updated since.
Is CVE-2026-104082 actively exploited?
CVE-2026-104082 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (58th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-104082?
CVE-2026-104082 has a CVSS base score of 7.2 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-104082?
A fix for CVE-2026-104082 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-104082 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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