{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-43927 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-43927 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-43927 is a medium-severity vulnerability in FOSSBilling, published on 6 Jul 2026."},"fix_prompt":"Check this codebase for CVE-2026-43927 and fix it if it is affected.\n\nWhat it is: CVE-2026-43927 is a medium-severity vulnerability in FOSSBilling, published on 6 Jul 2026. \nExploitation: There is no known exploitation of CVE-2026-43927 in the wild and no public exploit code.\n\nAffected product: FOSSBilling. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-43927/ (Markdown: https://insights.sbomify.com/CVE-2026-43927/index.md)","id":"CVE-2026-43927","markdown":"https://insights.sbomify.com/CVE-2026-43927/index.md","name":"CVE-2026-43927","record":{"aliases":["GHSA-w898-cx35-25gh"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"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:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-367","name":"Time-of-check Time-of-use (TOCTOU) Race Condition"}],"description":"FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, a race condition in the cart checkout flow allows an authenticated client to apply a promo code beyond its configured maximum uses. By sending concurrent checkout requests before any single request completes the usage increment, a client can obtain unlimited discounted or free orders from a single-use or limited-use promo code. Version 0.8.0 patches the issue. Some workarounds are available. Disable promo codes entirely until a patch is available or monitor the `promo` table for `used` values exceeding `maxuses` and manually review affected orders.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"FOSSBilling has race condition in cart checkout that bypasses promo code usage limits","id":"CVE-2026-43927","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"FOSSBilling: Payment amount not validated in PayPalEmail adapter allows invoice underpayment","id":"CVE-2026-43928"},"packages":[],"prev":{"headline":"FOSSBilling's password reset confirmation endpoint lacks rate limiting","id":"CVE-2026-43926"},"products":["FOSSBilling"],"published":"2026-07-06","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-07-07","vendors":["FOSSBilling"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-43927/"}