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Advisory record · GHSA-c6q7-wqw2-h65w

NationalSecurityAgency/emissary has an incomplete fix for CVE-2026-35571

CVSS 4.8 Medium

Published by the GitHub Advisory Database at 30 Oct 2026, 22:51 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
gov.nsa.emissary:emissaryMaven<8.51.08.51.0
Identifiers
GHSA-c6q7-wqw2-h65w · CVE-2026-54442
Weakness (CWE)
CWE-918
Tags
Published
30 Oct 2026
Updated
4 Nov 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

emissary versions before 8.51.0 contain an incomplete fix for CVE-2026-35571. Its URL validation for navigation links can be bypassed with protocol-relative or single-slash URLs, which can let an attacker redirect users to external sites or make the server send requests to internal services. Upgrade to emissary 8.51.0 or later.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
4.8 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 30 Oct 2026, 22:51 UTC Confirmed by GitHub Advisory Database
  2. 31 Oct 2026, 14:16 UTC First seen by agentprime
  3. 31 Oct 2026, 14:16 UTC Confirmed by OSV
  4. 5 Nov 2026, 20:30 UTC Confirmed by the CVE List
  5. 5 Nov 2026, 21:18 UTC Confirmed by NVD

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.