{"cve":"CVE-2023-42457","nvd":{"published":"2023-09-21T15:15:10.943","modified":"2026-06-17T06:23:52.353","status":"Modified","description":"plone.rest allows users to use HTTP verbs such as GET, POST, PUT, DELETE, etc. in Plone. Starting in the 2.x branch and prior to versions 2.0.1 and 3.0.1, when the `++api++` traverser is accidentally used multiple times in a url, handling it takes increasingly longer, making the server less responsive. Patches are available in `plone.rest` 2.0.1 and 3.0.1.  Series 1.x is not affected. As a workaround, one may redirect `/++api++/++api++` to `/++api++` in one's frontend web server (nginx, Apache).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770","CWE-400"],"references":["http://www.openwall.com/lists/oss-security/2023/09/22/2","https://github.com/plone/plone.rest/commit/43b4a7e86206e237e1de5ca3817ed071575882f7","https://github.com/plone/plone.rest/commit/77846a9842889b24f35e8bedc2e9d461388d3302","https://github.com/plone/plone.rest/security/advisories/GHSA-h6rp-mprm-xgcq","http://www.openwall.com/lists/oss-security/2023/09/22/2"],"products":["plone:rest"],"source":"nvd","synced_at":"2026-10-19T21:39:24.235896374+00:00"},"epss":{"cve":"CVE-2023-42457","score":0.01013,"percentile":0.63253,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-h6rp-mprm-xgcq","url":"https://osv.dev/vulnerability/GHSA-h6rp-mprm-xgcq","summary":"plone.rest vulnerable to Denial of Service when ++api++ is used many times","modified":"2025-02-13T19:36:59.155073Z","packages":[{"ecosystem":"PyPI","name":"plone-rest","purl":"pkg:pypi/plone-rest","ranges":[">=2.0.0a1 <2.0.1"],"fixed":["2.0.1"]},{"ecosystem":"PyPI","name":"plone-rest","purl":"pkg:pypi/plone-rest","ranges":[">=3.0.0 <3.0.1"],"fixed":["3.0.1"]}]},{"id":"PYSEC-2023-178","url":"https://osv.dev/vulnerability/PYSEC-2023-178","summary":"","modified":"2025-10-09T08:26:29.886157Z","packages":[{"ecosystem":"PyPI","name":"plone-rest","purl":"pkg:pypi/plone-rest","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}