CVE-2026-59185: identrail: Cross-tenant GitHub installation binding without ownership verification
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-04 15:41 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
identrail is a machine identity security platform for AWS, GitHub/OIDC, and Kubernetes. Prior to 1.0.2, the default-on `POST /v1/workspaces/:workspace_id/projects/:project_id/github/connect/complete` endpoint in `internal/api/router.go` accepts `installation_id` from the request body or `X-GitHub-Installation-ID` header without verifying the installation belongs to the caller’s workspace. `CompleteGitHubConnection` in `internal/api/github_connect.go` rigorously binds `state` to the caller’s tenant, workspace, and project, but checks only that the installation ID is positive before persisting it as the caller’s connection. `ListInstallationRepositories` in `internal/connectors/github/repositories.go` invokes token creation through `internal/connectors/github/app.go` and `POST /app/installations/{installationId}/access_tokens`, using the application’s JWT. An authenticated tenant who starts a legitimate connection can supply another customer’s non-secret installation ID to read the victim organization’s private repository inventory, content, and metadata or drive posture scans, provided identrail’s GitHub App is installed there. The default-off V2 `CompleteGitHubConnector` path shares the installation-ownership gap and additionally matches pending `state` without rechecking caller scope. This issue is fixed in version 1.0.2.
Description quoted from the CVE record (assigned by GitHub_M, published 2026-10-28).
Weakness: CWE-639: Authorization Bypass Through User-Controlled Key; CWE-862: Missing Authorization
How it can be exploited
Exploitable over the network with low attack complexity needing low privileges and no user interaction. Impact: confidentiality high, integrity low, availability none. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CISA assessment (SSVC): CISA has no evidence of exploitation. Automatable: no. Technical impact: partial.
Public exploit evidence (Exploit Observer)
Exploit Observer found 3 code repositories naming this CVE.
Code repositories that name a CVE are often scanners, copies or fakes, and some are malware. Read the code before running anything.
See all 8 references on Exploit Observer
Live scores
- EPSS
- 0.003
low predicted chance of attack - VEDAS
- 0.988
strong exploit evidence - On CISA KEV
- Not listed
- Detection rule
- Suricata
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| identrail | version < 1.0.2 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
No fixed version or vendor advisory is listed in the CVE record yet. Watch the vendor’s security page.
How to detect it
Suricata rules (network detection)
1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-59185 identrail - GitHub Installation Authorization Bypass. Add them to your Suricata rule set and reload.
Show the rules
alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-59185 identrail - GitHub Installation Authorization Bypass"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/github/connect/complete"; nocase; fast_pattern; http.header; content:"X-GitHub-Installation-ID"; nocase; classtype:web-application-attack; reference:cve,CVE-2026-59185; reference:url,https://www.exploit.observer/?keyword=CVE-2026-59185&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=identrail&match=exact; sid:1098803; rev:1;)
CVE-2026-59185.rules on GitHub
References
Other references
- https://github.com/identrail/identrail/security/advisories/GHSA-cp3j-m783-3ph5 (x_refsource_CONFIRM)
- https://github.com/identrail/identrail/commit/835e40517509d6ef5405c27fbf14f579bedff0e7 (x_refsource_MISC)
- https://github.com/identrail/identrail/releases/tag/v1.0.2 (x_refsource_MISC)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.