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Not in CISA KEV
CRITICAL severity

CVE-2016-9639 — salt

CRITICAL

CVE-2016-9639 is a critical-severity (CVSS 9.1) CWE-284 vulnerability in salt. A fix is available for salt — see the affected versions and patch details below.

Salt allows deleted minions to read or write to minions with the same id

Also known asGHSA-hvmj-356c-gpf4PYSEC-2017-34
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.6%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs85th percentile — riskier than 85% of all scored CVEsHighest risk
0.26%1.22%2.18%3.14%0.8%2.6%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
🐍salt

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

Description

Salt before 2015.8.11 allows deleted minions to read or write to minions with the same id, related to caching.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIsaltall versions2015.8.11pip install --upgrade 'salt==2015.8.11'

Affected Products

1 product · 1 configurations
Application
saltsaltstack
≤ 2015.8.10
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update salt to 2015.8.11 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-9639 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

Salt before 2015.8.11 allows deleted minions to read or write to minions with the same id, related to caching.
O3 Security · Impact-Aware SCA

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CVE-2016-9639: salt — Fixed in 2015.8.11