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MEDIUM severity

CVE-2022-40849 — thinkcmf

MEDIUMFix: thinkcmf/thinkcmf@aba1f52

CVE-2022-40849 is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in thinkcmf/thinkcmf. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for thinkcmf/thinkcmf — see the affected versions and patch details below.

ThinkCMF Stored Cross-Site Scripting (XSS)

Also known asGHSA-m9mf-rqx6-2xpc
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 8, 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-2022-40849.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk+0.01%
Lower risk than most CVEs37th percentile — riskier than 37% of all scored CVEsHighest risk
0.00%0.31%0.62%0.93%0.2%0.4%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
🐘thinkcmf/thinkcmf

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

ThinkCMF version 6.0.7 is affected by Stored Cross-Site Scripting (XSS). An attacker who successfully exploited this vulnerability could inject a Persistent XSS payload in the Slideshow Management section that execute arbitrary JavaScript code on the client side, e.g., to steal the administrator's PHP session token (PHPSESSID).

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistthinkcmf/thinkcmfall versions6.0.8composer require thinkcmf/thinkcmf:^6.0.8

Affected Products

1 product · 1 configurations
Application
thinkcmfthinkcmf
1 version
6.0.7
Exploits & PoCs
1

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

ThinkCMF version 6.0.7 is affected by Stored Cross-Site Scripting (XSS).…

github.comNVDDec 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update thinkcmf/thinkcmf to 6.0.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-40849 is resolved across your whole dependency graph.

  3. Workarounds

    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

ThinkCMF version 6.0.7 is affected by Stored Cross-Site Scripting (XSS). An attacker who successfully exploited this vulnerability could inject a Persistent XSS payload in the Slideshow Management section that execute arbitrary JavaScript code on the client side, e.g., to steal the administrator's PHP session token (PHPSESSID).
O3 Security · Impact-Aware SCA

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CVE-2022-40849: thinkcmf XSS — Fixed in 6.0.8