A flaw was found in GLib. The D-Bus client-side implementation of the DBUSCOOKIESHA1 SASL authentication mechanism does not validate the cookiecontext parameter received from the server. A malicious D-Bus server can supply a cookiecontext 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.
{
"cna_assigner": "redhat",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58015.json",
"cwe_ids": [
"CWE-22"
],
"unresolved_ranges": [
{
"extracted_events": [
{
"fixed": "2.88.1"
}
],
"source": "AFFECTED_FIELD"
}
]
}