CVE-2026-44377

CRITICALNVD 9.19.1
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 1.0% (60th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated
9.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines 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: 1.0%CVSS: 9.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

CubeCart is an ecommerce software solution. Prior to 6.7.0, an Authenticated Server-Side Template Injection (SSTI) vulnerability exists in multiple modules of CubeCart (including Email Templates and Documents). The application unsafely evaluates user-supplied input directly through the Smarty template engine. By leveraging this, an authenticated attacker with administrative privileges can bypass current restrictions and call native PHP functions within the templates, such as readgzfile() to read sensitive configuration files, or error_log() to write a malicious PHP web shell, ultimately achieving Information Disclosure and full Remote Code Execution (RCE). This vulnerability is fixed in 6.7.0.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
57
EG Risk 57/100

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 (value × EchelonGraph’s weight)
Severity91% × 45%
The EG Score, 9.1 of 10.
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 available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.0%
EPSS %ILE
60th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines 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.

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

May 13, 2026

Last Modified

May 14, 2026

Advisory Details (2)

Auto-updated Aug 1, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Server-Side Template Injection (SSTI) in Smarty Templates leading to RCE (New!) · Advisory · cubecart/v6 · GitHub

https://github.com/cubecart/v6/security/advisories/GHSA-wpjx-g695-qc5j
GitHub commit Patch Available

commit 76d783c8c4d8 (cubecart/v6)

Patch available: cubecart/v6 6.7.0 (contains commit 76d783c8c4d8)

https://github.com/cubecart/v6/commit/76d783c8c4d87a8a90dbfef1344a2733e7c6434c

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 31× 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.

Showing the most recent 99 of 174 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 75 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-16 16:42 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  2. 2026-10-16 14:45 UTCEG score recompute
  3. 2026-10-15 16:32 UTCEPSS rescoreEPSS 1.0% · 60th percentile
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  5. 2026-10-14 16:33 UTCEPSS rescoreEPSS 1.0% · 60th percentile
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  7. 2026-10-13 16:34 UTCEPSS rescoreEPSS 1.0% · 60th percentile
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  9. 2026-10-12 16:34 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  10. 2026-10-12 16:05 UTCEG score recompute
  11. 2026-10-11 19:47 UTCEG score recompute
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  13. 2026-10-11 14:27 UTCEG score recompute
  14. 2026-10-11 13:48 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  15. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  16. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  17. 2026-10-08 17:12 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  19. 2026-10-06 15:18 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  20. 2026-10-05 17:43 UTCEPSS rescoreEPSS 1.0% · 60th percentile
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  22. 2026-10-03 14:25 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  23. 2026-10-01 19:50 UTCEPSS rescoreEPSS 1.0% · 60th percentile
  24. 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.0% · 59th percentile
  25. 2026-09-30 13:02 UTCOSV refresh
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  1. 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.0% · 59th percentile
  2. 2026-09-26 15:58 UTCEPSS rescoreEPSS 1.0% · 59th percentile
  3. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.7% · 53rd percentile
  4. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  5. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  6. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  7. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  8. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  9. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  10. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  11. 2026-09-11 20:10 UTCOSV refresh
  12. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  13. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  14. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  15. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  16. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  17. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  18. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  19. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  20. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  21. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  22. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  23. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  24. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  25. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  26. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  27. 2026-08-23 17:49 UTCEG score recompute
  28. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  29. 2026-08-22 02:03 UTCEG score recompute
  30. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  31. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  32. 2026-08-20 19:46 UTCEG score recompute
  33. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  34. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  35. 2026-08-17 14:45 UTCEG score recompute
  36. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.7% · 51st percentile
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  38. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  39. 2026-08-16 04:01 UTCEG score recompute
  40. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  41. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  42. 2026-08-14 02:29 UTCEG score recompute
  43. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  44. 2026-08-12 15:48 UTCEG score recompute
  45. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  46. 2026-08-11 15:27 UTCEG score recompute
  47. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  48. 2026-08-11 00:55 UTCEG score recompute
  49. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  50. 2026-08-09 14:42 UTCEG score recompute
  51. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.7% · 51st percentile
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  53. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  54. 2026-08-07 19:43 UTCEG score recompute
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  56. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.7% · 50th percentile
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  58. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.7% · 50th percentile
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  61. 2026-08-03 19:07 UTCEG score recompute
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  65. 2026-08-01 19:34 UTCEG score recompute
  66. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  67. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.7% · 50th percentile
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  69. 2026-07-28 15:36 UTCEPSS rescoreEPSS 0.7% · 50th percentile
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  73. 2026-07-24 14:17 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  74. 2026-07-23 14:18 UTCEPSS rescoreEPSS 0.7% · 50th percentile

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Frequently asked(5)

What is CVE-2026-44377?
CVE-2026-44377 is a critical-severity vulnerability; its CVE record was published on May 13, 2026. CubeCart is an ecommerce software solution. Prior to 6.7.0, an Authenticated Server-Side Template Injection (SSTI) vulnerability exists in multiple modules of CubeCart (including Email Templates and Documents). The application unsafely evaluates user-supplied input directly through the Smarty…
When was the CVE record for CVE-2026-44377 published?
The CVE record for CVE-2026-44377 was published on May 13, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of May 14, 2026; the record at its source may have been updated since.
Is CVE-2026-44377 actively exploited?
CVE-2026-44377 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.0% probability of exploitation in the next 30 days (60th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-44377?
CVE-2026-44377 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-44377?
A fix for CVE-2026-44377 is available: update to the fixed version the vendor names in its advisory.

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