{"id":"CVE-2026-58012","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-58012","summary":"Glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char()","details":"A flaw was found in GLib. A buffer over-read can occur in the g_regex_replace function when used with the `G_REGEX_RAW` compile flag and case-change replacement escapes because the string_append function processes matched substrings using UTF-8 functions that assume valid UTF-8 input, even when the string is treated as raw bytes. This vulnerability can cause a minor information disclosure of 1-5 bytes and a denial of service when the buffer over-read crosses a page boundary.","published":"2026-06-30T12:57:21.859Z","modified":"2026-09-30T03:30:32.966276019Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"WEB","url":"https://catalog.redhat.com/software/containers/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:49512"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:55440"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:57015"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:58981"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:61766"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:61783"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:63135"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:63138"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:63140"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65762"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65763"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65767"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65768"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65769"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65770"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65771"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65773"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:66018"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:72394"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:72395"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:72399"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:72470"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:72475"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:72476"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:72502"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-58012"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58012.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58012"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492247"},{"type":"REPORT","url":"https://gitlab.gnome.org/GNOME/glib/-/issues/3918"},{"type":"PACKAGE","url":"https://gitlab.gnome.org/GNOME/glib/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-30T03:30:32.966276019Z"}}