{"id":"CVE-2026-58015","title":"A flaw was found in GLib","summary":"A flaw was found in GLib. The D-Bus client-side implementation of the DBUS_COOKIE_SHA1 SASL authentication mechanism does not validate the cookie_context parameter received from the server. A malicious D-Bus server can supply a cookie_co…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-22"],"vendor":"gnome","product":"glib","affected":["glib < 2.88.1","enterprise_linux = 6.0","enterprise_linux = 7.0","enterprise_linux = 8.0","enterprise_linux = 9.0","enterprise_linux = 10.0"],"patched":["glib 2.88.1"],"published":"2026-06-30","updated":"2026-09-15","sourceUpdated":"2026-09-15T12:17:51.643","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-58015","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:49512","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:55440","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:57015","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:58981","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:61766","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:61783","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:63135","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:63138","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:63140","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:65762","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:65763","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:65767","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:65768","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:65769","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:65770","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:65771","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:65773","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:66018","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:66357","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-58015","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492256","label":"secalert@redhat.com"},{"url":"https://gitlab.gnome.org/GNOME/glib/-/issues/3931","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-58015.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-58015"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58015"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-07-01T14:27:59.851892Z"},"epss":0.00661,"epssPercentile":0.49827,"ingestedAt":"2026-08-03T06:23:46.445Z","slug":"CVE-2026-58015","body":"## Overview\n\nA flaw was found in GLib. The D-Bus client-side implementation of the DBUS_COOKIE_SHA1 SASL authentication mechanism does not validate the cookie_context parameter received from the server. A malicious D-Bus server can supply a cookie_context containing path traversal sequences, causing the client to read an arbitrary file and exfiltrate sensitive data by verifying guessed file contents against a generated hash.\n\n## Affected\n\n- `glib < 2.88.1`\n- `enterprise_linux = 6.0`\n- `enterprise_linux = 7.0`\n- `enterprise_linux = 8.0`\n- `enterprise_linux = 9.0`\n- `enterprise_linux = 10.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `glib 2.88.1`\n\n## Vendor advisories\n\n- **RHSA-2026:57015** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-08-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:57015)\n- **RHSA-2026:55440** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-08-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:55440)\n- **RHSA-2026:61766** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-08-31 · [advisory](https://access.redhat.com/errata/RHSA-2026:61766)\n- **RHSA-2026:49512** · Red Hat · fixed in: Red Hat Enterprise Linux CRB (v. 8) · released 2026-08-03 · [advisory](https://access.redhat.com/errata/RHSA-2026:49512)\n- **RHSA-2026:61783** · Red Hat · fixed in: Red Hat Discovery 2 · released 2026-08-31 · [advisory](https://access.redhat.com/errata/RHSA-2026:61783)\n- **RHSA-2026:58981** · Red Hat · fixed in: Red Hat Update Infrastructure 5 · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58981)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-58015.json)\n- **RHSA-2026:65762** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS AUS (v.8.4), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:65762)\n- **RHSA-2026:63140** · Red Hat · fixed in: Cert Manager support for Red Hat OpenShift release 1.19 · released 2026-09-03 · [advisory](https://access.redhat.com/errata/RHSA-2026:63140)\n- **RHSA-2026:63135** · Red Hat · fixed in: Cert Manager support for Red Hat OpenShift release 1.19 · released 2026-09-03 · [advisory](https://access.redhat.com/errata/RHSA-2026:63135)\n- **RHSA-2026:63138** · Red Hat · fixed in: Cert Manager support for Red Hat OpenShift release 1.19 · released 2026-09-03 · [advisory](https://access.redhat.com/errata/RHSA-2026:63138)\n- **RHSA-2026:65773** · Red Hat · fixed in: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS) · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:65773)\n- **RHSA-2026:65767** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:65767)\n- **RHSA-2026:65768** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux BaseOS E4S (v.9.2) · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:65768)\n- **RHSA-2026:65770** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux BaseOS E4S (v.9.4) · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:65770)\n- **RHSA-2026:65763** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6), Red Hat CodeReady Linux Builder EUS (v.9.6) · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:65763)\n- **RHSA-2026:65769** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS AUS (v.8.6), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:65769)\n- **RHSA-2026:65771** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS E4S (v.8.8), Red Hat Enterprise Linux BaseOS TUS (v.8.8) · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:65771)\n- **RHSA-2026:66357** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.22 · released 2026-09-15 · [advisory](https://access.redhat.com/errata/RHSA-2026:66357)","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}