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Not in CISA KEV
HIGH severity

CVE-2023-49052 — microweber

HIGH

CVE-2023-49052 is a high-severity (CVSS 8.8) Unrestricted File Upload vulnerability in microweber/microweber. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Microweber file upload vulnerability

Also known asGHSA-2c7x-w3mx-h7p6
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
2 known
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs85th percentile — riskier than 85% of all scored CVEsHighest risk
0.00%11.1%22.3%33.4%26.3%2.5%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘microweber/microweber

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

File Upload vulnerability in Microweber v.2.0.4 allows a remote attacker to execute arbitrary code via a crafted script to the file upload function in the created forms component.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐘Packagistmicroweber/microweberall versionsNo fix

Affected Products

1 product · 1 configurations
Application
microwebermicroweber
1 version
2.0.4
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

File Upload vulnerability in Microweber v.2.0.4 allows a remote attacker…

github.comNVDDec 2023

Report on github.com

github.comNVDDec 2023

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for microweber/microweber, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of microweber/microweber for CVE-2023-49052. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.

Frequently Asked Questions

File Upload vulnerability in Microweber v.2.0.4 allows a remote attacker to execute arbitrary code via a crafted script to the file upload function in the created forms component.
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CVE-2023-49052: microweber RCE (High 8.8)