{"id":"CVE-2026-93682","title":"When the HTTP stream wrapper follows a redirect and the response carries a Location header with an empty value, the redirect code reads one byte past the end of the heap buffer holding the location","summary":"When the HTTP stream wrapper follows a redirect and the response carries a Location header with an empty value, the redirect code reads one byte past the end of the heap buffer holding the location. The value of that out-of-bounds byte d…","severity":"medium","cvss":5.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","cwe":["CWE-125"],"vendor":"PHP Group","product":"ext-standard","affected":["ext-standard >= 8.2.* < 8.2.34","ext-standard >= 8.3.* < 8.3.35","ext-standard >= 8.4.* < 8.4.26","ext-standard >= 8.5.* < 8.5.11"],"patched":["hardened_images"],"published":"2026-09-25","updated":"2026-09-29","sourceUpdated":"2026-09-29T21:27:41.130","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93682","references":[{"url":"https://github.com/php/php-src/security/advisories/GHSA-7875-c8px-7q5f","label":"security@php.net"},{"url":"https://github.com/php/php-src/security/advisories/GHSA-7875-c8px-7q5f","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93682.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-93682"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541615"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93682"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93682"},{"url":"https://access.redhat.com/errata/RHSA-2026:70720"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"epss":0.00335,"epssPercentile":0.26765,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-25T20:37:51.434446Z"},"ingestedAt":"2026-09-25T20:17:49.425Z","slug":"CVE-2026-93682","body":"## Overview\n\nWhen the HTTP stream wrapper follows a redirect and the response carries a Location header with an empty value, the redirect code reads one byte past the end of the heap buffer holding the location. The value of that out-of-bounds byte decides which redirect target is built, so a malicious server controls whether the client is sent to the host root or to the current directory.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:70720** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:70720)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93682.json)","depth":"twilight","depthScore":44,"depthScoreParts":{"impact":31.9,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":211184,"id":"CVE-2026-93682","ts":1790371216301,"field":"exploit_available","old":"false","new":"true"}]}