{"answers":{"affected":"3 open source packages ship an affected version, including github.com/free5gc/chf. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-32937 in the wild and no public exploit code.","fix":"Upgrade github.com/free5gc/chf to 1.2.2 or later.","what":"CVE-2026-32937 is a high-severity denial of service vulnerability in Free5gc Free5gc, published on 20 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-32937 and fix it if it is affected.\n\nWhat it is: CVE-2026-32937 is a high-severity denial of service vulnerability in Free5gc Free5gc, published on 20 Mar 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-2026-32937 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/free5gc/chf (Go): affected all versions; fixed in 1.2.2\n- github.com/free5gc/chf (Go): affected all versions; fixed in 1.2.2\n- github.com/free5gc/chf (Go): affected all versions; fixed in 1.2.2\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-2026-32937/ (Markdown: https://insights.sbomify.com/CVE-2026-32937/index.md)","id":"CVE-2026-32937","markdown":"https://insights.sbomify.com/CVE-2026-32937/index.md","name":"CVE-2026-32937","record":{"aliases":["GHSA-6g43-577r-wf4x","GO-2026-4750"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"5G core network","requires_auth":"low_privilege","summary":"Authenticated attackers can trigger server panics in free5GC CHF via out-of-bounds slice access, causing service disruption and log flooding.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"free5gc","vendor":"free5gc"}],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-129","name":"Improper Validation of Array Index"}],"description":"free5GC is an open source 5G core network. free5GC CHF prior to version 1.2.2 has an out-of-bounds slice access vulnerability in the CHF `nchf-convergedcharging` service. A valid authenticated request to PUT `/nchf-convergedcharging/v3/recharging/:ueId?ratingGroup=...` can trigger a server-side panic in `github.com/free5gc/chf/internal/sbi.(*Server).RechargePut(...)` due to an out-of-range slice access. In the reported runtime, Gin recovery converts the panic into HTTP 500, but the recharge path remains remotely panic-triggerable and can be abused repeatedly to degrade recharge functionality and flood logs. In deployments without equivalent recovery handling, this panic may cause more severe service disruption. free5GC CHF patches the issue. Some workarounds are available: Restrict access to the `nchf-convergedcharging` recharge endpoint to strictly trusted NF callers only; apply rate limiting or network ACLs in front of the CHF SBI interface to reduce repeated panic-trigger attempts; if the recharge API is not required, temporarily disable or block external reachability to this route; and/or ensure panic recovery, monitoring, and alerting are enabled.","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":"free5GC CHF has Out-of-Bounds Slice Access that Leads to DoS","id":"CVE-2026-32937","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"free5gc:free5gc","products":["free5gc:free5gc"],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"SiYuan has an Arbitrary File Read in its Desktop Publish Service","id":"CVE-2026-32938"},"packages":[{"ecosystem":"Go","fixed":["1.2.2"],"introduced":["0"],"last_affected":[],"package":"github.com/free5gc/chf","purl":null,"source":"GHSA-6g43-577r-wf4x"},{"ecosystem":"Go","fixed":["1.2.2"],"introduced":["0"],"last_affected":[],"package":"github.com/free5gc/chf","purl":"pkg:golang/github.com/free5gc/chf","source":"GHSA-6g43-577r-wf4x"},{"ecosystem":"Go","fixed":["1.2.2"],"introduced":["0"],"last_affected":[],"package":"github.com/free5gc/chf","purl":"pkg:golang/github.com/free5gc/chf","source":"GO-2026-4750"}],"prev":{"headline":"CoreDNS DoH GET path missing size validation causes CPU and memory amplification","id":"CVE-2026-32936"},"products":["chf"],"published":"2026-03-20","related":[{"cvss_score":10,"headline":"free5GC: NEF nnef-oam route group is unauthenticated; no-token requests reach the OAM handler","id":"CVE-2026-44327","kev_date_added":null,"published":"2026-05-27"},{"cvss_score":10,"headline":"free5GC's SMF UPI management interface lacks auth middleware; unauthenticated topology read/write requests reach handlers","id":"CVE-2026-44329","kev_date_added":null,"published":"2026-05-27"},{"cvss_score":10,"headline":"free5GC's NEF nnef-pfdmanagement API is unauthenticated; forged bearer tokens can read PFD data and create/delete PFD subscriptions","id":"CVE-2026-44330","kev_date_added":null,"published":"2026-05-27"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2025-63679","kev_date_added":null,"published":"2025-11-12"},{"cvss_score":9.4,"headline":"free5GC's NEF 3gpp-pfd-management API is unauthenticated; forged bearer tokens can create, read, and delete PFD transactions","id":"CVE-2026-44315","kev_date_added":null,"published":"2026-05-27"},{"cvss_score":9.4,"headline":"free5GC's NEF 3gpp-traffic-influence API is unauthenticated; missing or forged bearer tokens can create, read, patch, and delete subscriptions","id":"CVE-2026-44326","kev_date_added":null,"published":"2026-05-27"},{"cvss_score":8.7,"headline":"free5gc UDR improper path validation allows unauthenticated access to Traffic Influence Subscriptions","id":"CVE-2026-40247","kev_date_added":null,"published":"2026-04-16"}],"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":"2026-03-20","vendors":["free5gc"]},"summary":"Authenticated attackers can trigger server panics in free5GC CHF via out-of-bounds slice access, causing service disruption and log flooding.","url":"https://insights.sbomify.com/CVE-2026-32937/"}