Description
In PHP versions:8.1.* before 8.1.33, 8.2.* before 8.2.29, 8.3.* before 8.3.23, 8.4.* before 8.4.10 some functions like fsockopen() lack validation that the hostname supplied does not contain null characters. This may lead to other functions like parse_url() treat the hostname in different way, thus opening way to security problems if the user code implements access checks before access using such functions.
Problem types
CWE-918 Server-Side Request Forgery (SSRF)
Product status
8.1.* (semver) before 8.1.33
8.2.* (semver) before 8.2.29
8.3.* (semver) before 8.3.23
8.4.* (semver) before 8.4.10
Credits
Jihwan Kim
References
github.com/...hp-src/security/advisories/GHSA-3cr5-j632-f35r
lists.debian.org/debian-lts-announce/2025/07/msg00017.html
www.openwall.com/lists/oss-security/2025/07/11/4
github.com/...hp-src/security/advisories/GHSA-3cr5-j632-f35r