VulnSocial

CVE-2026-108698

LOWCVSS 8.3 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

hyper-mcp through 0.8.3 contains a signature verification bypass vulnerability in load_wasm in src/wasm/oci.rs that verifies the Cosign signature of a separately resolved tag rather than the loaded manifest. Attackers controlling registry responses for the tag can serve an unsigned malicious manifest to the loader and a signed one to Cosign, executing unsigned WebAssembly plugins with configured host capabilities.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-367

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-10-12: 110-12
Referenced assets1 URL
By indicator
Full discourse1 post
  • AI Cyber Brief@justelite

    hyper-mcp through 0.8.3: Cosign defaults accept any Sigstore keyless signer (CVE-2026-108699) and verify a re-resolved tag, not the loaded digest (CVE-2026-108698). No fix. Pin plugins by digest and lock cert identity—or treat the check as theater. https://www.cve.org/CVERecord?id=CVE-2026-108699

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