CVE•Published 2026-10-28•Modified 2026-10-28•0 articles on news•5 live references•NVD data
CVE-2026-118370
Vulnerability data via NVD (ingested)
CVSS v3.1
5.9
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS percentile
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Weaknesses (CWE)
Description
libexpat through 2.9.0 contains a signed integer overflow vulnerability in storeAtts() in lib/xmlparse.c that allows attackers to trigger out-of-bounds writes via oversized attribute counts. Attackers can supply a multi-gigabyte document with a start tag carrying over 2^30 attributes to overflow attIndex and nPrefixes, crashing applications or corrupting heap memory.
Timeline
Published 2026-10-28
Modified 2026-10-28
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 tag0 hosts
vuln:CVE-2026-118370Hosts Shodan has explicitly fingerprinted as vulnerable.
More intel sources (5)
Shodan report
vuln:CVE-2026-118370Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-118370Censys host search filtered to this CVE id.
grep.app
CVE-2026-118370Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-118370GitHub code search for direct mentions.
Google dork
"CVE-2026-118370" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-118370 on GitHub.
We haven't classified any articles referencing CVE-2026-118370 yet. The external references above still apply.