{"answers":{"affected":"10 open source packages ship an affected version, including github.com/coder/coder/v2 and github.com/coder/coder. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-55078 in the wild and no public exploit code.","fix":"Upgrade github.com/coder/coder/v2 to a fixed version for your release line: 2.29.17, 2.32.7, 2.33.8 or 2.34.2.","what":"CVE-2026-55078 is a medium-severity denial of service vulnerability in coder, published on 7 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-55078 and fix it if it is affected.\n\nWhat it is: CVE-2026-55078 is a medium-severity denial of service vulnerability in coder, published on 7 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-55078 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/coder/coder/v2 (Go): affected from 2.17.0; fixed in 2.29.17, 2.32.7, 2.33.8, 2.34.2\n- github.com/coder/coder/v2 (Go): affected from 2.17.0; fixed in 2.29.17\n- github.com/coder/coder/v2 (Go): affected from 2.17.0; fixed in 2.29.17\n- github.com/coder/coder/v2 (Go): affected from 2.30.0; fixed in 2.32.7\n- github.com/coder/coder/v2 (Go): affected from 2.30.0; fixed in 2.32.7\n- github.com/coder/coder/v2 (Go): affected from 2.33.0; fixed in 2.33.8\n- github.com/coder/coder/v2 (Go): affected from 2.33.0; fixed in 2.33.8\n- github.com/coder/coder/v2 (Go): affected from 2.34.0; fixed in 2.34.2\n- github.com/coder/coder/v2 (Go): affected from 2.34.0; fixed in 2.34.2\n- github.com/coder/coder (Go): affected all versions; no fix listed\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-55078/ (Markdown: https://insights.sbomify.com/CVE-2026-55078/index.md)","id":"CVE-2026-55078","markdown":"https://insights.sbomify.com/CVE-2026-55078/index.md","name":"CVE-2026-55078","record":{"aliases":["GHSA-2mg2-p7r7-g27f","GO-2026-5916"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Coder development environment","requires_auth":"low_privilege","summary":"Authenticated attackers can cause denial of service in Coder by uploading zip files that exhaust memory during decompression due to missing aggregate size limits.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"coder","vendor":"coder"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-409","name":"Improper Handling of Highly Compressed Data (Data Amplification)"}],"description":"Coder allows organizations to provision remote development environments via Terraform. Starting in version 2.17.0 and prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, `POST /api/v2/files` converts zip uploads to tar in memory via `CreateTarFromZip`, which enforced a per-entry size limit but no aggregate limit on total decompressed output, writing to an unbounded in-memory buffer. Exploitation requires authenticated file-upload access and the impact is limited to availability (denial of service). The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 adds a metadata preflight check that sums projected entry sizes and a streaming writer that enforces the aggregate limit during decompression. As a workaround, restrict file-upload permissions to trusted users or place a reverse proxy with request-body size limits in front of `coderd`.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Coder: Zip upload decompression lacks aggregate size limit, enabling denial of service","id":"CVE-2026-55078","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":10,"n_references":6,"next":{"headline":"Coder's unbounded memory allocation in provisioner file upload allows authenticated denial of service","id":"CVE-2026-55079"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/coder/coder","purl":"pkg:golang/github.com/coder/coder","source":"GO-2026-5916"},{"ecosystem":"Go","fixed":["2.29.17","2.32.7","2.33.8","2.34.2"],"introduced":["2.17.0","2.30.0","2.33.0","2.34.0"],"last_affected":[],"package":"github.com/coder/coder/v2","purl":"pkg:golang/github.com/coder/coder/v2","source":"GO-2026-5916"},{"ecosystem":"Go","fixed":["2.29.17"],"introduced":["2.17.0"],"last_affected":[],"package":"github.com/coder/coder/v2","purl":null,"source":"GHSA-2mg2-p7r7-g27f"},{"ecosystem":"Go","fixed":["2.29.17"],"introduced":["2.17.0"],"last_affected":[],"package":"github.com/coder/coder/v2","purl":"pkg:golang/github.com/coder/coder/v2","source":"GHSA-2mg2-p7r7-g27f"},{"ecosystem":"Go","fixed":["2.32.7"],"introduced":["2.30.0"],"last_affected":[],"package":"github.com/coder/coder/v2","purl":null,"source":"GHSA-2mg2-p7r7-g27f"},{"ecosystem":"Go","fixed":["2.32.7"],"introduced":["2.30.0"],"last_affected":[],"package":"github.com/coder/coder/v2","purl":"pkg:golang/github.com/coder/coder/v2","source":"GHSA-2mg2-p7r7-g27f"},{"ecosystem":"Go","fixed":["2.33.8"],"introduced":["2.33.0"],"last_affected":[],"package":"github.com/coder/coder/v2","purl":null,"source":"GHSA-2mg2-p7r7-g27f"},{"ecosystem":"Go","fixed":["2.33.8"],"introduced":["2.33.0"],"last_affected":[],"package":"github.com/coder/coder/v2","purl":"pkg:golang/github.com/coder/coder/v2","source":"GHSA-2mg2-p7r7-g27f"},{"ecosystem":"Go","fixed":["2.34.2"],"introduced":["2.34.0"],"last_affected":[],"package":"github.com/coder/coder/v2","purl":null,"source":"GHSA-2mg2-p7r7-g27f"},{"ecosystem":"Go","fixed":["2.34.2"],"introduced":["2.34.0"],"last_affected":[],"package":"github.com/coder/coder/v2","purl":"pkg:golang/github.com/coder/coder/v2","source":"GHSA-2mg2-p7r7-g27f"}],"prev":{"headline":"Coder: User-admin role can reset owner account password","id":"CVE-2026-55077"},"products":["coder"],"published":"2026-07-07","related":[{"cvss_score":9.1,"headline":"Coder: PKCS#7 signature bypass in Azure instance identity allows unauthenticated agent token theft","id":"CVE-2026-46354","kev_date_added":null,"published":"2026-07-07"},{"cvss_score":8.7,"headline":"Coder's workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID","id":"CVE-2026-55429","kev_date_added":null,"published":"2026-07-08"},{"cvss_score":8.3,"headline":"Coder vulnerable to SSH config injection via unsanitized server-supplied values in `coder config-ssh`","id":"CVE-2026-55427","kev_date_added":null,"published":"2026-07-07"},{"cvss_score":8.2,"headline":"Coder: Route hijacking through lack of validation of agent-supplied AllowedIPs in tailnet coordinator","id":"CVE-2026-55428","kev_date_added":null,"published":"2026-07-07"},{"cvss_score":8.2,"headline":"Coder's OIDC authentication allows email with partially matching domain to register","id":"CVE-2024-27918","kev_date_added":null,"published":"2024-03-06"},{"cvss_score":8.1,"headline":"Coder vulnerable to workspace auto-creation via crafted URL parameters without user consent","id":"CVE-2026-44454","kev_date_added":null,"published":"2026-07-07"},{"cvss_score":8.1,"headline":"Coder's privilege escalation vulnerability could lead to a cross workspace compromise","id":"CVE-2025-58437","kev_date_added":null,"published":"2025-09-06"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-08","vendors":["coder"]},"summary":"Authenticated attackers can cause denial of service in Coder by uploading zip files that exhaust memory during decompression due to missing aggregate size limits.","url":"https://insights.sbomify.com/CVE-2026-55078/"}