{"answers":{"affected":"3 open source packages ship an affected version, including github.com/gopacket/gopacket. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54345 exists.","fix":"Upgrade github.com/gopacket/gopacket to 1.6.1 or later.","what":"CVE-2026-54345 is a medium-severity vulnerability in gopacket, published on 28 Jul 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-2026-54345 and fix it if it is affected.\n\nWhat it is: CVE-2026-54345 is a medium-severity vulnerability in gopacket, published on 28 Jul 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-2026-54345 exists.\n\nAffected packages and fixed versions:\n- github.com/gopacket/gopacket (Go): affected all versions; fixed in 1.6.1\n- github.com/gopacket/gopacket (Go): affected all versions; fixed in 1.6.1\n- github.com/gopacket/gopacket (Go): affected all versions; fixed in 1.6.1\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-2026-54345/ (Markdown: https://insights.sbomify.com/CVE-2026-54345/index.md)","id":"CVE-2026-54345","markdown":"https://insights.sbomify.com/CVE-2026-54345/index.md","name":"CVE-2026-54345","record":{"aliases":["CLEANSTART-2026-TW67329","GHSA-6r28-9ppf-4hj5","GO-2026-6121","MINI-595g-43jx-3w69","MINI-6gxf-r47q-9mr9","MINI-6rw9-gvj3-2qx6","MINI-8j34-cvfq-vm97","MINI-8xc4-9wxq-84p8","MINI-92rx-pgcm-7cf7","MINI-fg6w-2383-q958","MINI-g5h4-vxjf-p7rp","MINI-hrqv-4r32-v35g","MINI-jf82-9vm9-vrx3","MINI-m6g7-rrm3-cjmj","MINI-p4fj-5jh4-2j44","MINI-pccc-pj7j-8736","MINI-pgrw-6c77-x4cc","MINI-q8r4-2gg8-grcm","MINI-r2cq-jjhg-5f39","MINI-r84v-52fw-3rp8","MINI-rqq7-f948-g4w3","MINI-vmmw-xcx3-73mw","MINI-w6w7-qqcf-pf5x","UBUNTU-CVE-2026-54345"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Go packet processing library","requires_auth":"none","summary":"An integer underflow in the Diameter AVP decoder allows remote attackers to trigger massive memory allocations, causing denial of service.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"gopacket","vendor":"gopacket"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-191","name":"Integer Underflow (Wrap or Wraparound)"}],"description":"gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the Diameter AVP decoder computes an AVP data length by subtracting a fixed header size from an attacker-controlled AVP Length field, so a vendor-flagged AVP whose Length is smaller than the 12-byte header underflows the unsigned 32-bit value and drives an unbounded allocation of roughly 4 GiB, and two such messages in succession OOM-kill a collector, causing an unauthenticated remote denial of service. This issue is fixed in version 1.6.1.","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":"GoPacket's Diameter AVP decoder: uint32 underflow on vendor header size leads to unbounded ~4 GiB allocation (unauthenticated remote DoS)","id":"CVE-2026-54345","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"Froxlor: Stored XSS in DNS TXT Record Content Allows Customer-to-Admin Account Takeover","id":"CVE-2026-54347"},"packages":[{"ecosystem":"Go","fixed":["1.6.1"],"introduced":["0"],"last_affected":[],"package":"github.com/gopacket/gopacket","purl":null,"source":"GHSA-6r28-9ppf-4hj5"},{"ecosystem":"Go","fixed":["1.6.1"],"introduced":["0"],"last_affected":[],"package":"github.com/gopacket/gopacket","purl":"pkg:golang/github.com/gopacket/gopacket","source":"GHSA-6r28-9ppf-4hj5"},{"ecosystem":"Go","fixed":["1.6.1"],"introduced":["0"],"last_affected":[],"package":"github.com/gopacket/gopacket","purl":"pkg:golang/github.com/gopacket/gopacket","source":"GO-2026-6121"}],"prev":{"headline":"ToolJet GitHub Actions comment body shell injection exposes deployment secrets","id":"CVE-2026-54344"},"products":["gopacket"],"published":"2026-07-28","related":[{"cvss_score":6.9,"headline":"GoPacket's sFlow ExtendedGatewayFlow decoder: unbounded attacker-controlled allocation (104-byte UDP datagram -\u003e up to 16 GiB make) -\u003e unauthenticated remote DoS","id":"CVE-2026-54332","kev_date_added":null,"published":"2026-07-28"}],"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-28","vendors":["gopacket"]},"summary":"An integer underflow in the Diameter AVP decoder allows remote attackers to trigger massive memory allocations, causing denial of service.","url":"https://insights.sbomify.com/CVE-2026-54345/"}