What is the CVSS score of CVE-2026-63443?

CVE-2026-63443 has a CVSS 3.1 base score of 8.3 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

Which versions of Coder are affected by CVE-2026-63443?

Let me analyze this CVE and produce the JSON. CVE-2026-63443: Coder workspace agent API insecure redirect handling. Affected: Coder (coder/coder) versions < 2.29.19, < 2.32.9, < 2.33.10, < 2.34.4.. A patch is available.

Is there a patch available for CVE-2026-63443?

Yes, a patch is available for CVE-2026-63443. Update the affected software to the latest version immediately.

Coder CVE-2026-63443

Q: Is there a patch available for CVE-2026-63443?

Yes, a patch is available for CVE-2026-63443. Update the affected software to the latest version immediately.

EUVD-2026-78927 HIGH

Incorrect Authorization (CWE-863)

2026-09-15 GitHub_M

Authentication Bypass Hashicorp Coder

8.3

CVSS 3.1 · Vendor: GitHub_M

Severity by source

Vendor (GitHub_M) PRIMARY

8.3 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Primary rating from Vendor (GitHub_M) · only source for this CVE.

CVSS VectorVendor: GitHub_M

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

Low

Lifecycle Timeline

POC Analysis Generated

Sep 15, 2026 - 19:22 vuln.today

Patch available

Sep 15, 2026 - 18:18 EUVD

Source Code Evidence Fetched

Sep 15, 2026 - 17:36 vuln.today

Analysis Generated

Sep 15, 2026 - 17:36 vuln.today

CVE Published

Sep 15, 2026 - 16:44 cve.org

HIGH 8.3

DescriptionCVE.org

Coder allows organizations to provision remote development environments via Terraform. Prior to 2.29.19, 2.32.9, 2.33.10, and 2.34.4, agentConn.apiClient() follows redirects while its custom transport accepts the host from the redirected request URL when the port is the workspace agent HTTP API port 4. An authenticated user who controls a modified workspace agent and knows another online agent's UUID can derive the victim's tailnet address and redirect control-plane requests to that agent. HTTP 301, 302, and 303 redirects can redirect read requests, while HTTP 307 and 308 preserve replayable write and process-start requests. The redirected workspace agent file APIs can read or write files as the victim workspace user, and affected versions exposing the workspace agent process API can execute commands after a redirected file write, crossing workspace and tenant boundaries. This issue is fixed in versions 2.29.19, 2.32.9, 2.33.10, and 2.34.4.