CVE•Published 2026-05-14•Modified 2026-05-15•0 articles on news•5 live references•NVD data
CVE-2026-44312
Vulnerability data via NVD (ingested)
CVSS v3.1
5.8
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
EPSS percentile
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Weaknesses (CWE)
Description
css_parser is a Ruby CSS parser. Prior to 2.1.0 and 1.22.0, the CSS Parser gem does not validate HTTPS connections, allowing a Man-in-the-Middle (MITM) attacker to inject or modify CSS content when stylesheets are loaded via HTTPS. The connection is established with OpenSSL::SSL::VERIFY_NONE, meaning any HTTPS certificate—even entirely untrusted—will be accepted without validation. This vulnerability is fixed in 2.1.0 and 1.22.0.
Timeline
Published 2026-05-14
Modified 2026-05-15
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).
More intel sources (5)
Shodan report
vuln:CVE-2026-44312Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-44312Censys host search filtered to this CVE id.
grep.app
CVE-2026-44312Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-44312GitHub code search for direct mentions.
Google dork
"CVE-2026-44312" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-44312 on GitHub.
We haven't classified any articles referencing CVE-2026-44312 yet. The external references above still apply.