9.3

CVE-2016-9587: ansible Improper Input Validation

Modified
AliasesALPINE-CVE-2016-9587GHSA-m956-frf4-m2wrPYSEC-2018-39
Published 24-04-2018Last modified 06-08-2024

Vulnerability summary

CVE-2016-9587 is a high (CVSS 9.3) Improper Input Validation vulnerability in ansible. EPSS estimates a 17.01% chance of exploitation in the next 30 days, higher than 97% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 6.6, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
9.3/10
010
High · v2.0 (NVD)
EPSS score
17.01%
0%100%
Medium · -0.13 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1exploit-database

Advisory lineage

Upstream 0 · Downstream 12 · Related 11
OPENSUSE-SU-2017:2976-1OPENSUSE-SU-2017:2978-1OPENSUSE-SU-2024:14244-1OPENSUSE-SU-2024:14536-1OPENSUSE-SU-2025:15605-1OPENSUSE-SU-2025:15753-1

Timeline

  1. 24-04-2018
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

Ansible before versions 2.1.4, 2.2.1 is vulnerable to an improper input validation in Ansible's handling of data sent from client systems. An attacker with control over a client system being managed by Ansible and the ability to send facts back to the Ansible server could use this flaw to execute arbitrary code on the Ansible server using the Ansible server privileges.

CVSS metrics

11 scores · 7 sources · 4 versions

EPSS trend

Probability

17.01%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

Decrease -0.13 pp

From 17.14% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • exploit-databaseremotelinuxUnverified

    Ansible 2.1.4/2.2.1 - Command Execution

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat16 products
  • ansible< 2.1.4
  • openstack11
  • ansible< 0:2.2.1.0-2.el7 | < 0:2.2.1.0-1.el7
  • atomic-openshift-utils< 0:3.2.53-1.git.0.2fefc17.el7 | < 0:3.3.67-1.git.0.7c5da0c.el7 | < 0:3.4.67-1.git.0.14a0b4d.el7
  • ceph-ansible< 0:2.1.9-1.el7scon
Alpine1 product
  • ansible< 2.1.4.0-r0 | < 2.2.1.0-r0
Ansible1 product
Debian1 product
  • ansible< 2.2.0.0-3
PyPI1 product
  • ansible< 2.1.4.0 | ≥ 2.2.0.0, < 2.2.1.0
Ubuntu1 product
  • ansible< 2.0.0.2-2ubuntu1.1
Unspecified1 product
  • ansibleansible 2.1.4 | ansible 2.2.1

7 vendors · 22 products

References

97 links
Show all 97 references