CVE-2026-44377

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 50% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.1Exploit: NoneExposed: 0

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

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
9.1(medium)
EPSS
50.3%
KEV
Not listed

Published

May 13, 2026

Last Modified

May 14, 2026

Advisory Details (2)

Auto-updated May 13, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

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
generic

GHSA-wpjx-g695-qc5j — block SSTI/RCE via dangerous PHP functions in t… · cubecart/v6@76d783c · GitHub

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 7× in last 7d / 46× 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 162 total refreshes for this CVE.

  1. 2026-07-16 17:03 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
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  1. 2026-06-27 03:08 UTCEPSS rescore
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  27. 2026-06-15 17:49 UTCEPSS rescore
  28. 2026-06-15 07:56 UTCEG score recompute
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  74. 2026-06-08 00:28 UTCEG score recompute
  75. 2026-06-07 20:13 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-44377?
CVE-2026-44377 is a critical vulnerability 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 CVE-2026-44377 disclosed?
CVE-2026-44377 was first published in the National Vulnerability Database on May 13, 2026, with the most recent update on May 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44377 actively exploited?
CVE-2026-44377 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 50.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44377, 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.

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