{"answers":{"affected":"2 open source packages ship an affected version, including github.com/pomerium/pomerium.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-50285 exists.","fix":"Upgrade github.com/pomerium/pomerium to 0.32.8 or later.","what":"CVE-2026-50285 is a high-severity denial of service vulnerability in pomerium, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-50285 and fix it if it is affected.\n\nWhat it is: CVE-2026-50285 is a high-severity denial of service vulnerability in pomerium, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-50285 exists.\n\nAffected packages and fixed versions:\n- github.com/pomerium/pomerium (Go): affected from 0.32.6; fixed in 0.32.8\n- github.com/pomerium/pomerium (Go): affected from 0.32.6; fixed in 0.32.8\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-2026-50285/ (Markdown: https://insights.sbomify.com/CVE-2026-50285/index.md)","id":"CVE-2026-50285","markdown":"https://insights.sbomify.com/CVE-2026-50285/index.md","name":"CVE-2026-50285","record":{"aliases":["GHSA-ggw3-5987-rx77"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Identity access proxy","requires_auth":"none","summary":"Unauthenticated attackers can cause memory exhaustion and service disruption in Pomerium stateless deployments via unbounded zstd decompression.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/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-1284","name":"Improper Validation of Specified Quantity in Input"}],"description":"Pomerium is an identity and context-aware access proxy. Prior to 0.32.8, decodeQueryStringV2 in pkg/hpke/url.go performs zstd decompression of attacker-controlled data without an output-memory limit when DecryptURLValues processes HPKE V2 values for Stateless.Callback in internal/authenticateflow/stateless.go. In hosted or stateless authentication deployments, an unauthenticated attacker can obtain the receiver key from /.well-known/pomerium/hpke-public-key, provide a matching attacker-controlled sender key, and send a compressed payload to /.pomerium/callback that expands before validateSenderPublicKey rejects the sender. This can allocate hundreds of megabytes per request, exhaust proxy memory, crash or degrade the process, and block access to applications protected by the deployment. Stateful deployments are not affected because the stateful callback verifies its HMAC signature before decryption and decompression. This issue is fixed in version 0.32.8.","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":"Pomerium: Pre-Auth Memory Exhaustion via Unbounded zstd Decompression in HPKE Callback","id":"CVE-2026-50285","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Missing Authentication for Critical Function in @agenticmail/mcp","id":"CVE-2026-50287"},"packages":[{"ecosystem":"Go","fixed":["0.32.8"],"introduced":["0.32.6"],"last_affected":[],"package":"github.com/pomerium/pomerium","purl":null,"source":"GHSA-ggw3-5987-rx77"},{"ecosystem":"Go","fixed":["0.32.8"],"introduced":["0.32.6"],"last_affected":[],"package":"github.com/pomerium/pomerium","purl":"pkg:golang/github.com/pomerium/pomerium","source":"GHSA-ggw3-5987-rx77"}],"prev":{"headline":"Craft CMS: Missing peer-permission check in `AssetsController::actionDeleteFolder` allows deletion of other users' assets","id":"CVE-2026-50284"},"products":["pomerium"],"published":"2026-09-17","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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-17","vendors":["pomerium"]},"summary":"Unauthenticated attackers can cause memory exhaustion and service disruption in Pomerium stateless deployments via unbounded zstd decompression.","url":"https://insights.sbomify.com/CVE-2026-50285/"}