CVE-2026-55079
- Source
- https://cve.org/CVERecord?id=CVE-2026-55079
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55079.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-55079
- Aliases
- Published
- 2026-07-07T23:50:37.197Z
- Modified
- 2026-07-08T08:13:48.736505666Z
- Severity
-
- 4.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- Coder's unbounded memory allocation in provisioner file upload allows authenticated denial of service
- Details
-
Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.24.0 and prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2,
NewDataBuilderinprovisionersdk/proto/dataupload.goallocated a byte slice using the client-suppliedFileSizefrom aDataUploadmessage without an upper-bound check. Although the DRPC wire limit is 4 MiB, theFileSizevalue itself was unconstrained. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 validatesFileSizeagainst an upper bound (MaxFileSize = 100 MiB) before allocation. As a workaround, restrict access to the provisioner daemon serve endpoint to trusted provisioner daemon service accounts. - Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55079.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-789" ] }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55079.json
- https://github.com/coder/coder/pull/25710
- 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/coder/coder/security/advisories/GHSA-f962-qm93-mj4c
- https://nvd.nist.gov/vuln/detail/CVE-2026-55079
Affected packages
Git / github.com/coder/coder
Affected ranges
- Type
- GIT
- Repo
- https://github.com/coder/coder
- Events
-
IntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixed
- Database specific
{ "source": "AFFECTED_FIELD", "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": "2.24.0" }, { "fixed": "2.29.17" } ] }