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CVE-2026-40968 is a privilege escalation vulnerability in Spring gRPC affecting versions 1.0.0 through 1.0.2. When an authenticated user attempts to access a gRPC method and access is denied, the authenticated security identity is not properly cleared from the gRPC worker thread. Because the stale authentication context can remain bound to that thread, a subsequent unauthenticated request processed on the same worker thread may inherit the prior user's identity. This results in improper reuse of thread-associated security state across requests and can cause authorization decisions for the later request to be made using the previous authenticated principal.
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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.
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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.
5 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.