CVE•Published 2026-09-25•Modified 2026-10-27•0 articles on news•5 live references•NVD data
CVE-2026-91768Php · Php
Vulnerability data via NVD (ingested)
CVSS v3.1
6.5
MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS percentile
46
Exploit Prediction Scoring System · top 54% of all CVEs
Weaknesses (CWE)
Description
The IPv6 branch of the FastCGI client access check compares only the first 12 bytes of a 16-byte IPv6 address, so listen.allowed_clients matches on a /96 prefix instead of the exact address. An attacker who can source an address sharing the first 96 bits with an allowed one passes the check and reaches the FastCGI endpoint.
Timeline
Published 2026-09-25
Modified 2026-10-27
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 tag431 hosts
vuln:CVE-2026-91768Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Php Php"All exposed Php Php instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Php"HTTP body or banner mentions "Php" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-91768Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-91768Censys host search filtered to this CVE id.
grep.app
CVE-2026-91768Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-91768GitHub code search for direct mentions.
Google dork
"CVE-2026-91768" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-91768 on GitHub.
We haven't classified any articles referencing CVE-2026-91768 yet. The external references above still apply.