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MEDIUM severity

CVE-2023-43340 — evolution

MEDIUM

CVE-2023-43340 is a medium-severity (CVSS 5.2) Cross-site Scripting (XSS) vulnerability in evolutioncms/evolution. 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.

Evolution CMS Cross-site Scripting vulnerability

Also known asGHSA-432f-967f-vxg4
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
2 known
Exploitation data as of Nov 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2023-43340.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs42th percentile — riskier than 42% of all scored CVEsHighest risk
0.00%0.59%1.18%1.76%1.3%0.5%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
🐘evolutioncms/evolution

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

Cross-site scripting (XSS) vulnerability in evolution v.3.2.3 allows a local attacker to execute arbitrary code via a crafted payload injected into the cmsadmin, cmsadminemail, cmspassword and cmspasswordconfim parameters

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
🐘Packagistevolutioncms/evolutionall versionsNo fix

Affected Products

1 product · 1 configurations
Application
evolution cmsevo
1 version
3.2.3
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.

Cross-site scripting (XSS) vulnerability in evolution v.3.2.3 allows a l…

github.comNVDOct 2023

Report on github.com

github.comNVDOct 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 evolutioncms/evolution, 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 evolutioncms/evolution for CVE-2023-43340. 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

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

Cross-site scripting (XSS) vulnerability in evolution v.3.2.3 allows a local attacker to execute arbitrary code via a crafted payload injected into the cmsadmin, cmsadminemail, cmspassword and cmspasswordconfim parameters
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CVE-2023-43340: evolution RCE (Medium 5.2)