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Fencer Intel
critical 9.8

CVE-2014-9462 json

Mercurial vulnerable to arbitrary command execution via a crafted repository name in a clone command

published 2015-03-31 11 y ago modified 2026-06-17 4 mo ago also GHSA-3pmw-h7j4-rf54 , PYSEC-2015-14 , EUVD-2015-0029

cvss
9.8
version 3.1, GitHub
cisa kev
Not listed
not in CISA's catalog
epss
4.2%
EPSS 4.2% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

The _validaterepo function in sshpeer in Mercurial before 3.2.4 allows remote attackers to execute arbitrary commands via a crafted repository name in a clone command.

Patch / fix

  • pypi mercurial 3.2.4
  • mercurial Debian 14, Debian 13, Debian 12 3.4-1

debian advisories DEBIAN-CVE-2014-9462

  • mercurial Ubuntu 14.04 LTS 2.8.2-1ubuntu1.3

ubuntu advisories UBUNTU-CVE-2014-9462

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • mercurial SLE Software Development Kit 12 2.8.2-3.1

suse advisories SUSE-SU-2015:0836-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-9462 updated cvss 6.5

mercurial: command Injection via sshpeer._validaterepo()

  • Red Hat Enterprise Linux 6 mercurial, mercurial-hgk, emacs-mercurial, emacs-mercurial-el Red Hat Enterprise Linux 7 mercurial, mercurial-hgk, emacs-mercurial, emacs-mercurial-el
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.17% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • chargen.matasano.com http://chargen.matasano.com/chargen/2015/3/17/this-new-vulnerability-mercurial-command-injection-cve-2014-9462.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi mercurial
<3.2.4
3.2.4

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.