{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-58012", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-06-26T20:59:47.855Z", "datePublished": "2026-06-30T12:57:21.859Z", "dateUpdated": "2026-09-01T02:20:35.686Z" }, "containers": { "cna": { "title": "Glib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char()", "metrics": [ { "other": { "content": { "value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "version": "3.1" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "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." } ], "affected": [ { "vendor": "GNOME", "product": "GLib", "versions": [ { "status": "affected", "version": "0", "lessThan": "2.86.5", "versionType": "semver" }, { "status": "affected", "version": "0", "lessThan": "2.88.1", "versionType": "semver" } ], "packageName": "GLib", "collectionURL": "https://gitlab.gnome.org/GNOME/glib/", "defaultStatus": "unaffected" }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "glib2", "defaultStatus": "affected", "versions": [ { "version": "0:2.80.4-12.el10_2.21", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/o:redhat:enterprise_linux:10.2" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "mingw-glib2", "defaultStatus": "affected", "versions": [ { "version": "0:2.70.1-9.el8_10", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:enterprise_linux:8::crb" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "glib2", "defaultStatus": "affected", "versions": [ { "version": "0:2.56.4-177.el8_10", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:enterprise_linux:8::crb", "cpe:/o:redhat:enterprise_linux:8::baseos" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "glib2", "defaultStatus": "affected", "versions": [ { "version": "0:2.68.4-19.el9_8.9", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:enterprise_linux:9::appstream", "cpe:/a:redhat:enterprise_linux:9::crb", "cpe:/o:redhat:enterprise_linux:9::baseos" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "glib2", "defaultStatus": "affected", "versions": [ { "version": "0:2.68.4-19.el9_8.9", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:enterprise_linux:9::appstream", "cpe:/a:redhat:enterprise_linux:9::crb", "cpe:/o:redhat:enterprise_linux:9::baseos" ] }, { "vendor": "Red Hat", "product": "Red Hat Discovery 2", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "discovery/discovery-server-rhel9", "defaultStatus": "affected", "versions": [ { "version": "1788205779", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:discovery:2::el9" ] }, { "vendor": "Red Hat", "product": "Red Hat Discovery 2", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "discovery/discovery-ui-rhel9", "defaultStatus": "affected", "versions": [ { "version": "1788206196", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:discovery:2::el9" ] }, { "vendor": "Red Hat", "product": "Red Hat Update Infrastructure 5", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhui5/cds-kubernetes-tp-rhel9", "defaultStatus": "affected", "versions": [ { "version": "1787241211", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:rhui:5::el9" ] }, { "vendor": "Red Hat", "product": "Red Hat Update Infrastructure 5", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhui5/installer-tp-rhel9", "defaultStatus": "affected", "versions": [ { "version": "1787135742", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:rhui:5::el9" ] }, { "vendor": "Red Hat", "product": "Red Hat Update Infrastructure 5", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "rhui5/rhua-tp-rhel9", "defaultStatus": "affected", "versions": [ { "version": "1787241260", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:rhui:5::el9" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "mingw-glib2", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:10" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "glib2", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:6" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "glib2", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:7" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "mingw-glib2", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:9" ] }, { "vendor": "Red Hat", "product": "Red Hat Hardened Images", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "glib2", "defaultStatus": "unaffected", "cpes": [ "cpe:/a:redhat:hummingbird:1" ] } ], "references": [ { "url": "https://access.redhat.com/errata/RHSA-2026:49512", "name": "RHSA-2026:49512", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2026:55440", "name": "RHSA-2026:55440", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2026:57015", "name": "RHSA-2026:57015", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2026:58981", "name": "RHSA-2026:58981", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2026:61766", "name": "RHSA-2026:61766", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/errata/RHSA-2026:61783", "name": "RHSA-2026:61783", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2026-58012", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492247", "name": "RHBZ#2492247", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] }, { "url": "https://gitlab.gnome.org/GNOME/glib/-/issues/3918" } ], "datePublic": "2026-03-27T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-126", "description": "Buffer Over-read", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-126: Buffer Over-read", "workarounds": [ { "lang": "en", "value": "To mitigate this vulnerability, implement strict input validation to sanitize user-supplied replacement strings, specifically rejecting or escaping case-change modifiers (\\u, \\l, \\U, \\L) before calling g_regex_replace() or g_regex_replace_eval() when the G_REGEX_RAW compile flag is used. Removing the G_REGEX_RAW flag or hardcoding the replacement strings will completely neutralize this issue." } ], "timeline": [ { "lang": "en", "time": "2026-06-24T16:40:58.048Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-03-27T00:00:00.000Z", "value": "Made public." } ], "credits": [ { "lang": "en", "value": "Red Hat would like to thank linhlhq for reporting this issue." } ], "providerMetadata": { "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-09-01T02:20:35.686Z" }, "x_generator": { "engine": "cvelib 1.8.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-06-30T13:17:40.887957Z", "id": "CVE-2026-58012", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-30T13:18:19.247Z" } } ] } }