{"answers":{"affected":"3 open source packages ship an affected version, including github.com/klever-io/klever-go.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54754 exists.","fix":"Upgrade github.com/klever-io/klever-go to 1.7.19 or later.","what":"CVE-2026-54754 is a critical vulnerability in klever-io klever-go, published on 28 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-54754 and fix it if it is affected.\n\nWhat it is: CVE-2026-54754 is a critical vulnerability in klever-io klever-go, published on 28 Aug 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-2026-54754 exists.\n\nAffected packages and fixed versions:\n- github.com/klever-io/klever-go (Go): affected all versions; fixed in 1.7.19\n- github.com/klever-io/klever-go (Go): affected all versions; fixed in 1.7.19\n- github.com/klever-io/klever-go (Go): affected all versions; fixed in 1.7.19\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-2026-54754/ (Markdown: https://insights.sbomify.com/CVE-2026-54754/index.md)","id":"CVE-2026-54754","markdown":"https://insights.sbomify.com/CVE-2026-54754/index.md","name":"CVE-2026-54754","record":{"aliases":["GHSA-p7gw-2pcp-5pf8","GO-2026-6315"],"analysis":{"component_type":"other","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Klever blockchain protocol","requires_auth":"low_privilege","summary":"An attacker can manipulate asset royalties to mint unbacked currency during marketplace settlements, corrupting token supply integrity in the Klever blockchain.","user_interaction":"not_required","vuln_class":"business_logic"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":9.6,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-682","name":"Incorrect Calculation"},{"id":"CWE-367","name":"Time-of-check Time-of-use (TOCTOU) Race Condition"},{"id":"CWE-191","name":"Integer Underflow (Wrap or Wraparound)"}],"description":"Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.19, marketplace settlement in core/kapp/market/market.go reads MarketOrderData.ReferralPercentage from the listing while reading asset.Royalties.MarketPercentage live at purchase time. An asset owner can create a valid listing and then use AssetTrigger UpdateRoyalties to make the combined referral and royalty percentages exceed the bid. executeBuyMarket pays referral and royalty amounts unconditionally while computeMarketOwnerAmount silently skips a nonpositive seller remainder, allowing MarketBuy, BuyItNow, or auction Claim settlement to credit more KLV or sale currency than the buyer paid. This can create unbacked currency and corrupt token supply integrity. This issue is fixed in version 1.7.19.","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":"Klever: Marketplace settlement mints KLV when referral % + royalty % exceed the bid (negative seller share silently skipped)","id":"CVE-2026-54754","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"business_logic","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"Klever-Go: Integer overflow in split-royalty validation enables unbounded minting of KLV (native token)","id":"CVE-2026-54755"},"packages":[{"ecosystem":"Go","fixed":["1.7.19"],"introduced":["0"],"last_affected":[],"package":"github.com/klever-io/klever-go","purl":null,"source":"GHSA-p7gw-2pcp-5pf8"},{"ecosystem":"Go","fixed":["1.7.19"],"introduced":["0"],"last_affected":[],"package":"github.com/klever-io/klever-go","purl":"pkg:golang/github.com/klever-io/klever-go","source":"GHSA-p7gw-2pcp-5pf8"},{"ecosystem":"Go","fixed":["1.7.19"],"introduced":["0"],"last_affected":[],"package":"github.com/klever-io/klever-go","purl":"pkg:golang/github.com/klever-io/klever-go","source":"GO-2026-6315"}],"prev":{"headline":"Nx: `nx graph` dev server permissive CORS policy","id":"CVE-2026-54753"},"products":["klever-go"],"published":"2026-08-28","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":"2026-08-31","vendors":["klever-io"]},"summary":"An attacker can manipulate asset royalties to mint unbacked currency during marketplace settlements, corrupting token supply integrity in the Klever blockchain.","url":"https://insights.sbomify.com/CVE-2026-54754/"}