{"id":"EM-20261107-9A19","url":"https://cyber.eventmonitor.net/incident/EM-20261107-9A19/critical-rrd-cgi-image-vulnerability-cve-2026-123776/","type":"cve","title":"Critical RRD::CGI::Image Vulnerability (CVE-2026-123776)","subtitle":"CVE-2026-123776","subject":"CVE-2026-123776","status":"Developing","severity":"critical","affected":[],"headline":null,"born":"2026-11-07T12:31:53.000Z","firstSignal":"2026-11-07T12:17:46.093Z","lastSignal":"2026-11-07T12:31:53.000Z","updated":"2026-11-10T15:06:51.347Z","revision":1,"life":[{"status":"Born","at":"2026-11-07T12:31:53.000Z","why":"second independent source: C29 CIRCL Vulnerability-Lookup"},{"status":"Developing","at":"2026-11-07T12:31:53.000Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-07T12:17:46.093Z","what":"First signal: C6 NVD CVE API 2.0"},{"at":"2026-11-07T12:31:53.000Z","what":"Born: second source, C29 CIRCL Vulnerability-Lookup. Page EM-20261107-9A19 created."}],"stages":[{"name":"Disclosed","at":"2026-11-07T12:17:46.093Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-07T12:17:46.093Z","detail":"CVSS 9.8 · EPSS 0.2%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":null,"detail":"None in sources yet"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-07T12:17:46.093Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":4,"title":"CVE-2026-123776 (CVSS 9.8)","text":"RRD::CGI::Image versions through 0.01 for Perl pass CGI query parameters containting \"tz\" to tzset(), , so a FIFO or device path blocks the CGI process.\n\nThe normalize_params method sends any query key matching /tz/i to tz(), which sets $ENV{TZ} to that value, with no validation. It then calls tzset(). glibc treats a TZ value starting with / or : as a file path and opens it, so a value naming a FIFO or a blocking device stalls the process inside tzset().","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123776"},{"at":"2026-11-07T12:31:53.000Z","source":"C29","sourceName":"CIRCL Vulnerability-Lookup","role":"Database","severity":2,"title":"GHSA-vx75-vp6j-73h2 / CVE-2026-123776","text":"RRD::CGI::Image versions through 0.01 for Perl pass CGI query parameters containting \"tz\" to tzset(), , so a FIFO or device path blocks the CGI process.\n\nThe normalize_params method sends any query key matching /tz/i to tz(), which sets $ENV{TZ} to that value, with no validation. It then calls…","url":"https://vulnerability.circl.lu/vuln/GHSA-vx75-vp6j-73h2"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-07T12:17:46.093","score":9.8,"severity":"CRITICAL","desc":"RRD::CGI::Image versions through 0.01 for Perl pass CGI query parameters containting \"tz\" to tzset(), , so a FIFO or device path blocks the CGI process.\n\nThe normalize_params method sends any query key matching /tz/i to tz(), which sets $ENV{TZ} to that value, with no validation. It then calls…","product":"","seen":1794323211347},"kev":null,"epss":{"epss":0.0024,"pct":0.15225,"at":1794323211347},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}