CVE•Published 2018-09-25•Modified 2026-10-07•1 article on news•5 live references•NVD data
CVE-2018-14647Python · Python
Vulnerability data via NVD (ingested)
CVSS v3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS percentile
96
Exploit Prediction Scoring System · top 4% of all CVEs
Weaknesses (CWE)
Description
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.
Timeline
Published 2018-09-25
Modified 2026-10-07
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag34,340 hosts
vuln:CVE-2018-14647Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Python Python"All exposed Python Python instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Python"HTTP body or banner mentions "Python" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2018-14647Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2018-14647Censys host search filtered to this CVE id.
grep.app
CVE-2018-14647Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2018-14647GitHub code search for direct mentions.
Google dork
"CVE-2018-14647" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.