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CVE-2017-1000116

31
FAUCET Score

CVE-2017-1000116 is a critical shell-injection vulnerability in Mercurial versions prior to 4.3, stemming from inadequate sanitization of hostnames passed to SSH, affecting products like Debian and Red Hat. With a CVSS score of 9.8, this network-exploitable flaw requires no user interaction and can lead to complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness of its severe potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.3CPE matchmatch criteria
cpe:2.3:a:mercurial:mercurial:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.73%
Probability of exploitation in next 30 days
EPSS Percentile
92.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0573 is in the 87th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

gentoopatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: mercurialFixed in: 4.3
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: mercurial-0:2.6.2-8.el7_4
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: mercurial

Vendor Advisories (2)

pipGHSA-3qmg-c9vc-r47jcritical

Mercurial is vulnerable to shell injection attack

May 13, 2022
redhatCVE-2017-1000116Important

mercurial: command injection on clients through malicious ssh URLs

Aug 10, 2017

References

access.redhat.com / errata/RHSA-2017:2489
Third Party Advisory
security.gentoo.org / glsa/201709-18
PatchThird Party AdvisoryVDB Entry
mercurial-scm.org / wiki/WhatsNew
Release NotesVendor Advisory
debian.org / security/2017/dsa-3963
Third Party Advisory
securityfocus.com / bid/100290
Third Party AdvisoryVDB Entry