CVE Explorer
CVE-2026-55438
Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.17, 2.32.7, 2.33.8, and 2.34.2, Coder's subdomain-based workspace app proxy allowed the same-owner CORS check to be bypassed. When a workspace-name subdomain segment parsed as a UUID, the workspace was resolved by ID without confirming the URL's username matched the real owner, while the CORS middleware trusted the unverified username in the hostname. Practical exploitation requires subd
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"coder","vendor":"coder","versions":[{"status":"affected","version":">= 2.34.0, < 2.34.2"},{"status":"affected","version":">= 2.33.0, < 2.33.8"},{"status":"affected","version":">= 2.30.0, < 2.32.7"},{"status":"affected","version":"< 2.29.17"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:ce9f2fa25af4aed6c07ef918781a38693a99a2ce197b6234d981cd2dddf2c0a3 · sha256:2105d814bb013a39… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:ce9f2fa25af4aed6c07ef918781a38693a99a2ce197b6234d981cd2dddf2c0a3 · sha256:2105d814bb013a39… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:ce9f2fa25af4aed6c07ef918781a38693a99a2ce197b6234d981cd2dddf2c0a3 · sha256:2105d814bb013a39… · /containers/cna/problemTypes/0/descriptions/0
Source references
7 source assertions{"name":"https://github.com/coder/coder/pull/26085","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/pull/26085"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ce9f2fa25af4aed6c07ef918781a38693a99a2ce197b6234d981cd2dddf2c0a3 · sha256:2105d814bb013a39… · /containers/cna/references/1
{"name":"https://github.com/coder/coder/pull/26086","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/pull/26086"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ce9f2fa25af4aed6c07ef918781a38693a99a2ce197b6234d981cd2dddf2c0a3 · sha256:2105d814bb013a39… · /containers/cna/references/2
{"name":"https://github.com/coder/coder/releases/tag/v2.29.17","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/releases/tag/v2.29.17"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ce9f2fa25af4aed6c07ef918781a38693a99a2ce197b6234d981cd2dddf2c0a3 · sha256:2105d814bb013a39… · /containers/cna/references/3
{"name":"https://github.com/coder/coder/releases/tag/v2.32.7","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/releases/tag/v2.32.7"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ce9f2fa25af4aed6c07ef918781a38693a99a2ce197b6234d981cd2dddf2c0a3 · sha256:2105d814bb013a39… · /containers/cna/references/4
{"name":"https://github.com/coder/coder/releases/tag/v2.33.8","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/releases/tag/v2.33.8"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ce9f2fa25af4aed6c07ef918781a38693a99a2ce197b6234d981cd2dddf2c0a3 · sha256:2105d814bb013a39… · /containers/cna/references/5
{"name":"https://github.com/coder/coder/releases/tag/v2.34.2","tags":["x_refsource_MISC"],"url":"https://github.com/coder/coder/releases/tag/v2.34.2"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ce9f2fa25af4aed6c07ef918781a38693a99a2ce197b6234d981cd2dddf2c0a3 · sha256:2105d814bb013a39… · /containers/cna/references/6
{"name":"https://github.com/coder/coder/security/advisories/GHSA-5wg6-jmq2-53pw","tags":["x_refsource_CONFIRM"],"url":"https://github.com/coder/coder/security/advisories/GHSA-5wg6-jmq2-53pw"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ce9f2fa25af4aed6c07ef918781a38693a99a2ce197b6234d981cd2dddf2c0a3 · sha256:2105d814bb013a39… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.