SSRF in Coder
CVE-2026-45796
Coder allows organizations to provision remote development environments via Terraform. Versions prior tp 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3 are vulnerable to unauthenticated semi-blind Server-Side Request Forgery (SSRF) via the Azure instance identity endpoint (`POST /api/v2/workspaceagents/azure-instance-identity`). An external attacker can force the Coder server to issue HTTP GET requests to arbitrary internal or external hosts by submitting a crafted PKCS#7 signature. The server does not return the target's response body, but error messages in the API response reveal whether the target is reachable and what type of failure occurred. Versions 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3 patch the issue. As a workaround, if the Azure identity-auth mechanism is not being used then restrict access to the corresponding endpoint (`/api/v2/workspaceagents/azure-instance-identity`) using ingress firewall and/or proxy ACLs.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (35.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Coder — versions >= 2.33.0-rc.0, < 2.33.3, >= 2.32.0-rc.0, < 2.32.2, >= 2.31.0, < 2.31.12
Weakness classification (CWE)
References
- github.com/coder/coder/security/advisories/GHSA-686c-7vgv-v3fx (Patch, Vendor Advisory)
- github.com/coder/coder/pull/25274 (Patch, Issue Tracking)
- github.com/coder/coder/commit/57b11d405f17492aa789d4b9ff33366f961a37f8 (Patch)
- github.com/coder/coder/releases/tag/v2.24.5 (Release Notes)
- github.com/coder/coder/releases/tag/v2.29.13 (Release Notes)
- github.com/coder/coder/releases/tag/v2.30.8 (Release Notes)
- github.com/coder/coder/releases/tag/v2.31.12 (Release Notes)
- github.com/coder/coder/releases/tag/v2.32.2 (Release Notes)
- github.com/coder/coder/releases/tag/v2.33.3 (Release Notes)
Frequently asked questions
- What is CVE-2026-45796?
- CVE-2026-45796 is a medium-severity vulnerability in Coder, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2026-07-07.
- How severe is CVE-2026-45796?
- Medium severity. CVSS v3 base score is 6.5 out of 10.