CVE-2021-47937
📛 CVE Title
(no title)
Description
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.
Overview
- State
- —
- Assigner (CNA)
- —
- CVSS severity
- high
- CVSS score
- 8.8 / 10
- CVSS vector
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Effective score
- 8.8 / 10 HIGH source: CNA overview
- CWE(s)
- —
- Reserved
- —
- Published
- —
- Last updated
- —
- Source
- https://www.tenable.com/cve/CVE-2021-47937
- Linked Threat
- CVE-2021-47937 — CVE-2021-47937
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-05-10 13:16:29 UTC
- NVD last modified
- 2026-05-12 14:24:15 UTC
- NVD CVSS v3.1
- 8.8 / 10 HIGH source: disclosure@vulncheck.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Exploitability subscore
- 2.8 / 10
- Impact subscore
- 5.9 / 10
- EPSS score
- 0.0030 (probability of exploitation in next 30 days)
- EPSS percentile
- 53.05% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24
NVD-assigned CWE(s):
CWE-434
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-05-24 23:58 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2021-34798 - Assigner
- VulnCheck
- Published
- May 10, 2026, 12:43:55 PM
- Updated
- May 12, 2026, 2:38:57 AM
- EUVD base score (CVSS 4.0)
-
8.7 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - EUVD-reported EPSS
- 0.3000
- Vendors
- e107
- Products
-
e107 CMS (2.3.0)
ENISA description: 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.
Vendor references (0)
References embedded in the original CVE record by the assigning CNA.
None in the CVE record.
Web references (7)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://e107.org/ tenable:e107.org
- https://e107.org/download tenable:e107.org
- https://nvd.nist.gov/vuln/detail/CVE-2021-47937 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2021-47937 tenable:www.cve.org
- https://www.exploit-db.com/exploits/50315 tenable:www.exploit-db.com
- https://www.first.org/epss/ tenable:www.first.org
- https://www.vulncheck.com/advisories/e107-cms-authenticated-remote-code-execution-via-theme-upload tenable:www.vulncheck.com
NVD-tagged references (4)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://e107.org/ disclosure@vulncheck.com
- https://e107.org/download disclosure@vulncheck.com
- https://www.exploit-db.com/exploits/50315 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/e107-cms-authenticated-remote-code-execution-via-theme-upload disclosure@vulncheck.com
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:crimsondesert.pearlabyss.com
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web:epatch.pa.gov
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2026-05-26 02:51 UTC -
web:forums.ea.com
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2026-05-26 02:51 UTC -
web:github.com
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2026-05-26 02:51 UTC -
web:msrc.microsoft.com
Access Microsoft Security Response Center's guide to address vulnerabilities, manage security risks, and keep your systems protected with the latest updates.
2026-05-26 02:51 UTC -
web:nvd.nist.gov
Mitigation of the vulnerabilities in this context typically involves coding changes, but could also include specification changes or even specification deprecations (e.g., removal of affected protocols or functionality in their entirety)."
2026-05-26 02:51 UTC -
web:patch.com
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2026-05-26 02:51 UTC -
web:playvalorant.com
VALORANT Patch Notes 11.10 The Harbor Rework is here! Along with QoL updates, balance updates to Clove, and bug fixes.
2026-05-26 02:51 UTC -
web:www.cve.org
At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures
2026-05-26 02:51 UTC -
web:www.leagueoflegends.com
League of Legends Patch 26.5 Notes Welcome to the official patch of First Stand, the first major international tournament of the year!
2026-05-26 02:51 UTC
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