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TI-2021-22550 Aliases CVE-2021-47937GHSA-2ggw-79xf-f33h

e107 CMS 2.3.0 Authenticated Remote Code Execution via Theme Upload

Priority HIGH 73CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

e107 CMS 2.3.0 contains a remote code execution vulnerability that allows authenticated users with theme installation permissions to execute arbitrary commands by uploading malicious theme files. Attackers can upload a crafted theme package through the theme.php endpoint that deploys a web shell to the e107_themes directory, then execute system commands via the payload.php script.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0059 48th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
e107e107 CMS2.3.0—No fix listedCNA
  • e107 CMS Vendore107 Affected 2.3.0 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:e107:e107:*:*:*:*:*:*:*:*——e107
  • cpe:2.3:a:e107:e107:*:*:*:*:*:*:*:* Versions — — ·e107

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-47937
  2. 2026-10-03 Alias added: GHSA-2ggw-79xf-f33h

References

Exploit 1

Other 2

  • TI-2022-26359 e107 CMS v3.2.1 - Reflected XSS via Comment Flow CVSS 3.1CRITICAL 9.8
  • TI-2022-26369 e107 CMS v3.2.1 - Upload restriction bypass (Authenticated [Admin])+ Server file override CVSS 4.0HIGH 8.7
  • TI-2022-26391 e107 CMS v3.2.1 - Upload Restriction Bypass with Path Traversal File Override CVSS 4.0HIGH 8.6
  • TI-2022-26361 e107 CMS v3.2.1 - Admin Upload Restriction Bypass + RCE CVSS 4.0HIGH 8.6
  • TI-2023-23543 Multiple Cross Site Scripting (XSS) vulnerability in e017 CMS v.2.3.2 allows a local… CVSS 3.1MEDIUM 5.4
  • TI-2023-23542 A Cross Site Scripting (XSS) vulnerability in e017 CMS v.2.3.2 allows a local attacker to… CVSS 3.1MEDIUM 5.4
See all 83 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences