CVE-2026-103090

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Source

https://cve.org/CVERecord?id=CVE-2026-103090

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103090.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-103090

Aliases

GHSA-hp3x-79wr-rx66

Published

2026-10-21T22:16:59Z

Modified

2026-10-22T10:45:33Z

Severity

8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator

Summary

Unauthenticated Biscuit Credential Disclosure via GET /enroll/status in Google OSS Agent Mesh (SAM)

Details

Missing Authentication for Critical Function (CWE-306) and Insufficiently Protected Credentials (CWE-522) in the control plane enrollment status handler (HandleEnrollStatus at GET /enroll/status in internal/controlplane/server.go) in Google OSS Agent Mesh (SAM) versions 0.1.0-alpha.1 through 0.1.0-alpha.8 allow an unauthenticated remote attacker to retrieve an approved bootstrap-enrolled peer's signed Biscuit identity token by supplying a peer_id obtainable from the unauthenticated GET /info endpoint. A related flaw in POST /enroll allowed any bootstrap-token holder to re-fetch another peer's credential. An attacker can replay the disclosed Biscuit token as a bearer credential on /policies to read mesh authorization policies and on /routers/lease to overwrite advertised router multiaddrs. Users should upgrade to version 0.1.0-alpha.9 or later, which requires cryptographic proof of possession of the enrollment private key on credential-releasing endpoints, enforces rate limiting, and validates router lease addresses.

Database specific

{
    "cna_assigner":  "Google",
    "cwe_ids":  [
        "CWE-306",
        "CWE-522"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103090.json"
}

References

Affected packages

Git / github.com/google/agentmesh

Affected ranges

Type

GIT

Repo

https://github.com/google/agentmesh

Events

Introduced

ffc3e6072383ea6e9cf3fbadc7cf473db448b364

Fixed

bcf9bc22e5f4bb00eb504c1ab5f55815e0e91f23

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0.1.0-alpha.1"
                },
                {
                    "fixed":  "0.1.0-alpha.9"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "original_tag":  "v0.1.0-alpha.9",
            "range":  [
                {
                    "fixed":  "bcf9bc22e5f4bb00eb504c1ab5f55815e0e91f23"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103090.json"