Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Emissary versions before 8.39.0 are affected by a path traversal flaw in the configuration API endpoint (/api/configuration/{name}), where a blacklist check on configuration names could be bypassed using encoded or Unicode variants. The source describes the impact as potential read access to configuration files outside the intended directory, but gives few details on how an attacker reaches the endpoint. Upgrade to Emissary 8.39.0 or later, which replaces the blacklist with an allowlist.
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
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 5.3 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0033, the 26th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:20 UTC First seen by agentprime
- 31 Oct 2026, 14:20 UTC Confirmed by OSV