CVE-2026-91768
EUVD-2026-8735025.09.2026, 22:18
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.Enginsight
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| php | php | 8.2.* ≤ 𝑥 < 8.2.34 | CNA |
| php | php | 8.3.* ≤ 𝑥 < 8.3.35 | CNA |
| php | php | 8.4.* ≤ 𝑥 < 8.4.26 | CNA |
| php | php | 8.5.* ≤ 𝑥 < 8.5.11 | CNA |
Debian Releases
Ubuntu Releases
Ubuntu Product | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| php5 |
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| php7.0 |
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| php7.2 |
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| php7.4 |
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| php8.1 |
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| php8.3 |
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| php8.5 |
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Common Weakness Enumeration