CVE-2026-63329

LOWCVSS 4.9 · MEDIUM

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

Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. Prior to 0.25.6, copy_server_request in warpgate-protocol-http/src/proxy.rs forwards a client-supplied x-warpgate-username header before inject_own_headers appends the authenticated username. Because the request builder preserves repeated values, a proxied backend that trusts the first x-warpgate-username value can authorize an authenticated attacker as another user. The same forwarding policy also accepts the reserved x-warpgate-authentication-type header, and warpgate-common/src/http_headers.rs does not exclude either reserved identity header. This issue is fixed in version 0.25.6.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-116CWE-290

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

Referenced assets1 URL

By indicator

https://www.valtersit.com/cve/CVE-2026-63329

Full discourse1 post

Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters21h
CVE-2026-63329 Warpgate 0.25.6 fixes privilege escalation: HTTP proxy forwards client-supplied x-warpgate-username before auth header, letting attackers impersonate other users. CVSS 4.9. Patch under review; update now. https://www.valtersit.com/cve/CVE-2026-63329 #Warpgate #CVEALERT #CVE #infosec #Linux #XSS #valtersit #snippet #SysAdmin #cybersecurity #devsecops #devops #developer #100daysofcode #git #github #gitlab #redteam #blueteam #ethicalhacker #cybersecurityawareness #cybersecuritynews #cybersecuritytips #python #hacker #kali #ubuntu #debian #docker
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