{"answers":{"affected":"7 open source packages ship an affected version, including github.com/cloudreve/Cloudreve/v3, github.com/cloudreve/Cloudreve and github.com/cloudreve/Cloudreve/v4.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55497 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-55497 is a medium-severity denial of service vulnerability in cloudreve, published on 31 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-2026-55497 and fix it if it is affected.\n\nWhat it is: CVE-2026-55497 is a medium-severity denial of service vulnerability in cloudreve, published on 31 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55497 exists.\n\nAffected packages and fixed versions:\n- github.com/cloudreve/Cloudreve/v3 (Go): affected all versions; no fix listed\n- github.com/cloudreve/Cloudreve/v3 (Go): affected all versions up to 3.0.0-20250225100611-da4e44b77af4; no fix listed\n- github.com/cloudreve/Cloudreve/v3 (Go): affected all versions up to 3.0.0-20250225100611-da4e44b77af4; no fix listed\n- github.com/cloudreve/Cloudreve (Go): affected all versions; no fix listed\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260613024411-3607f79bb44c\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260613024411-3607f79bb44c\n- github.com/cloudreve/Cloudreve/v4 (Go): affected all versions; fixed in 4.0.0-20260613024411-3607f79bb44c\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-2026-55497/ (Markdown: https://insights.sbomify.com/CVE-2026-55497/index.md)","id":"CVE-2026-55497","markdown":"https://insights.sbomify.com/CVE-2026-55497/index.md","name":"CVE-2026-55497","record":{"aliases":["GHSA-g9j2-8w95-3vwv","GO-2026-6100"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Cloudreve file manager","requires_auth":"low_privilege","summary":"An authenticated user can crash the Cloudreve server by uploading small images with large pixel dimensions, causing out-of-memory errors.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"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)"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the built-in thumbnail and avatar image decoders limit compressed file size but do not limit decoded pixel dimensions, allowing an authenticated user to submit a small PNG, JPEG, or GIF that triggers an unbounded allocation and terminates the Cloudreve process through fatal out-of-memory behavior. This issue is fixed in version 4.17.0.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Cloudreve: Server crash through image decompression/pixel bomb in thumbnail \u0026 avatar decoding (DoS)","id":"CVE-2026-55497","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":7,"n_references":3,"next":{"headline":"FileRise Shared Folder Symlink Escape","id":"CVE-2026-55498"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve","purl":"pkg:golang/github.com/cloudreve/Cloudreve","source":"GO-2026-6100"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v3","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","source":"GO-2026-6100"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["3.0.0-20250225100611-da4e44b77af4"],"package":"github.com/cloudreve/Cloudreve/v3","purl":null,"source":"GHSA-g9j2-8w95-3vwv"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["3.0.0-20250225100611-da4e44b77af4"],"package":"github.com/cloudreve/Cloudreve/v3","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v3","source":"GHSA-g9j2-8w95-3vwv"},{"ecosystem":"Go","fixed":["4.0.0-20260613024411-3607f79bb44c"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":null,"source":"GHSA-g9j2-8w95-3vwv"},{"ecosystem":"Go","fixed":["4.0.0-20260613024411-3607f79bb44c"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","source":"GHSA-g9j2-8w95-3vwv"},{"ecosystem":"Go","fixed":["4.0.0-20260613024411-3607f79bb44c"],"introduced":["0"],"last_affected":[],"package":"github.com/cloudreve/Cloudreve/v4","purl":"pkg:golang/github.com/cloudreve/Cloudreve/v4","source":"GO-2026-6100"}],"prev":{"headline":"Cloudreve: Information Exposure in `GET /api/v4/user/search`: `SearchActive` omits the active-status predicate, leaking inactive/banned account emails","id":"CVE-2026-55496"},"products":["cloudreve"],"published":"2026-07-31","related":[],"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-31","vendors":["cloudreve"]},"summary":"An authenticated user can crash the Cloudreve server by uploading small images with large pixel dimensions, causing out-of-memory errors.","url":"https://insights.sbomify.com/CVE-2026-55497/"}