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Vulnerability details: VCID-ems8-fwjz-q3at
Vulnerability ID VCID-ems8-fwjz-q3at
Aliases CVE-2018-14647
Summary Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.
Status Published
Exploitability 0.5
Weighted Severity 4.8
Risk 2.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-909 Missing Initialization of Resource
System Score Found at
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-14647.json
epss 0.01247 https://api.first.org/data/v1/epss?cve=CVE-2018-14647
epss 0.01247 https://api.first.org/data/v1/epss?cve=CVE-2018-14647
cvssv3 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-14647.json
https://api.first.org/data/v1/epss?cve=CVE-2018-14647
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000158
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000802
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1060
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1061
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14647
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1631822 https://bugzilla.redhat.com/show_bug.cgi?id=1631822
921039 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=921039
RHSA-2019:2030 https://access.redhat.com/errata/RHSA-2019:2030
RHSA-2019:3725 https://access.redhat.com/errata/RHSA-2019:3725
RHSA-2020:1268 https://access.redhat.com/errata/RHSA-2020:1268
RHSA-2020:1346 https://access.redhat.com/errata/RHSA-2020:1346
RHSA-2020:1462 https://access.redhat.com/errata/RHSA-2020:1462
USN-3817-1 https://usn.ubuntu.com/3817-1/
USN-3817-2 https://usn.ubuntu.com/3817-2/
USN-6891-1 https://usn.ubuntu.com/6891-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-14647.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.79642
EPSS Score 0.01247
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T17:08:35.980236+00:00 Debian Importer Import https://security-tracker.debian.org/tracker/data/json 38.6.0