CVE-2026-55428
- Source
- https://cve.org/CVERecord?id=CVE-2026-55428
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55428.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-55428
- Aliases
- Published
- 2026-07-07T23:57:45.338Z
- Modified
- 2026-07-09T04:02:30.811618432Z
- Severity
-
- 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N CVSS Calculator
- Summary
- Coder: Route hijacking through lack of validation of agent-supplied AllowedIPs in tailnet coordinator
- Details
-
Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, the tailnet coordinator validates that an agent's
Addressesderive from its authenticated UUID but applies no equivalent check toAllowedIPs. The coordinator forwards agent-suppliedAllowedIPsverbatim to tunnel peers which install them into the WireGuard peer configuration. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 validates eachAllowedIPsprefix against the authenticating agent's UUID just likeAddresses. As a workaround, monitor coordinator logs for agents advertising unexpectedAllowedIPsprefixes. - Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55428.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-285", "CWE-863" ] }- References
-
- https://github.com/coder/coder/releases/tag/v2.29.17
- https://github.com/coder/coder/releases/tag/v2.32.7
- https://github.com/coder/coder/releases/tag/v2.33.8
- https://github.com/coder/coder/releases/tag/v2.34.2
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55428.json
- https://github.com/coder/coder/security/advisories/GHSA-wrq8-fcv5-8hvp
- https://nvd.nist.gov/vuln/detail/CVE-2026-55428
- https://github.com/coder/coder/pull/26144
Affected packages
Git / github.com/coder/coder
Affected ranges
- Type
- GIT
- Repo
- https://github.com/coder/coder
- Events
-
IntroducedIntroducedIntroducedIntroduced0 Unknown introduced commit / All previous commits are affectedFixedFixedFixedFixed
- Database specific
{ "source": [ "AFFECTED_FIELD", "REFERENCES" ], "extracted_events": [ { "introduced": "2.34.0" }, { "fixed": "2.34.2" }, { "introduced": "2.33.0" }, { "fixed": "2.33.8" }, { "introduced": "2.30.0" }, { "fixed": "2.32.7" }, { "introduced": "0" }, { "fixed": "2.29.17" } ] }
Affected versions
Other
rm
v0.*
v0.10.0
v0.10.1
v0.10.2
v0.11.0
v0.12.0
v0.12.1
v0.12.2
v0.12.3
v0.12.4
v0.12.5
v0.12.6
v0.12.7
v0.12.8
v0.12.9
v0.13.0
v0.13.1
v0.13.2
v0.13.3
v0.13.4
v0.13.5
v0.13.6
v0.14.0
v0.14.1
v0.14.2
v0.14.3
v0.15.0
v0.15.1
v0.15.2
v0.15.3
v0.16.0
v0.17.0
v0.17.1
v0.17.2
v0.17.3
v0.17.4
v0.18.0
v0.18.1
v0.19.0
v0.19.1
v0.19.2
v0.20.0
v0.20.1
v0.21.0
v0.21.1
v0.21.2
v0.21.3
v0.22.0
v0.22.1
v0.22.2
v0.23.0
v0.23.1
v0.23.2
v0.23.3
v0.23.4
v0.23.5
v0.23.6
v0.23.7
v0.24.0
v0.24.1
v0.25.0
v0.26.0
v0.26.1
v0.26.2
v0.27.0
v0.27.1
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.3.4
v0.3.5
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.4.4
v0.5.0
v0.5.1
v0.5.10
v0.5.11
v0.5.2
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.5.7
v0.5.8
v0.5.9
v0.6.0
v0.6.1
v0.6.2
v0.6.3
v0.6.4
v0.6.5
v0.6.6
v0.7.0
v0.7.1
v0.7.10
v0.7.11
v0.7.12
v0.7.2
v0.7.3
v0.7.4
v0.7.5
v0.7.6
v0.7.7
v0.7.8
v0.7.9
v0.8.0
v0.8.1
v0.8.10
v0.8.11
v0.8.12
v0.8.13
v0.8.14
v0.8.15
v0.8.2
v0.8.3
v0.8.4
v0.8.5
v0.8.6
v0.8.7
v0.8.8
v0.8.9
v0.9.0
v0.9.1
v0.9.10
v0.9.2
v0.9.3
v0.9.4
v0.9.5
v0.9.6
v0.9.7
v0.9.8
v0.9.9
v2.*
v2.0.2
v2.1.1
v2.1.2
v2.1.3
v2.1.4
v2.1.5
v2.10.0
v2.2.1
v2.29.0
v2.29.1
v2.29.10
v2.29.11
v2.29.12
v2.29.13
v2.29.14
v2.29.15
v2.29.16
v2.29.2
v2.29.3
v2.29.4
v2.29.5
v2.29.6
v2.29.7
v2.29.8
v2.29.9
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.32.0
v2.32.0-rc.0
v2.32.1
v2.32.2
v2.32.3
v2.32.4
v2.32.5
v2.32.6
v2.33.0
v2.33.0-rc.0
v2.33.1
v2.33.2
v2.33.3
v2.33.4
v2.33.5
v2.33.6
v2.33.7
v2.34.0
v2.34.1
v2.4.0
v2.5.0
v2.5.1
v2.6.0
v2.7.0
v2.7.1
v2.8.0
v2.9.0