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CRITICAL severity

CVE-2020-7706 — connie-lang

CRITICALFix: mattinsler/connie-lang@ef376d4

CVE-2020-7706 is a critical-severity (CVSS 9.8) CWE-1321 vulnerability in connie-lang. 1 public exploit reference exists, so weaponization risk is real. A fix is available for connie-lang — see the affected versions and patch details below.

Prototype Pollution in connie-lang

Also known asGHSA-8vv3-jxm8-f4vfSNYK-JS-CONNIELANG-598853
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs86th percentile — riskier than 86% of all scored CVEsHighest risk
1.22%1.91%2.61%3.30%1.7%2.8%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2020-7706 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,987 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

1other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
connie-langnpm
59downloads / week

Description

The package connie-lang before 0.1.1 are vulnerable to Prototype Pollution in the configuration language library used by connie.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmconnie-langall versions0.1.1npm install connie-lang@0.1.1

Affected Products

1 product · 1 configurations
Application
connie-langconnie-lang_project
< 0.1.1
range
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.

The package connie-lang before 0.1.1 are vulnerable to Prototype Polluti…

snyk.ioNVDDec 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 connie-lang, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update connie-lang to 0.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-7706 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

The package connie-lang before 0.1.1 are vulnerable to Prototype Pollution in the configuration language library used by connie.
O3 Security · Impact-Aware SCA

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CVE-2020-7706: connie-lang — Fixed in 0.1.1