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CVE-2026-58015 is a path traversal flaw in GLib’s D-Bus client-side implementation of the DBUS_COOKIE_SHA1 SASL authentication mechanism. During authentication, the client accepts a cookie_context value supplied by the D-Bus server but does not properly validate it before using it to locate cookie material. Because cookie_context is not constrained to an expected safe path or namespace, a malicious D-Bus server can include path traversal sequences and influence the client into reading files outside the intended cookie directory. The attack enables arbitrary file reads on the client side, and sensitive data may then be exfiltrated indirectly by checking guessed file contents against a generated authentication hash.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
9 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.