{"cve":"CVE-2023-28626","nvd":{"published":"2023-03-28T21:15:11.190","modified":"2026-06-17T05:48:25.207","status":"Modified","description":"comrak is a CommonMark + GFM compatible Markdown parser and renderer written in rust. A range of quadratic parsing issues are present in Comrak. These can be used to craft denial-of-service attacks on services that use Comrak to parse Markdown. This issue has been addressed in version 0.17.0. Users are advised to upgrade. There are no known workarounds for this vulnerability. This issue is also tracked as `GHSL-2023-047`","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-400"],"references":["https://github.com/kivikakk/comrak/commit/ce795b7f471b01589f842dc09af38b025701178d","https://github.com/kivikakk/comrak/security/advisories/GHSA-8hqf-xjwp-p67v","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OUYME2VA555X6567H7ORIJQFN4BVGT6N/","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PTWZWCT7KCX2KTXTLPUYZ3EHOONG4X46/","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VQ3UBC7LE4VPCMZBTADIBL353CH7CPVV/"],"products":["comrak_project:comrak"],"source":"nvd","synced_at":"2026-10-19T21:37:48.383111019+00:00"},"epss":{"cve":"CVE-2023-28626","score":0.0112,"percentile":0.6617,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8hqf-xjwp-p67v","url":"https://osv.dev/vulnerability/GHSA-8hqf-xjwp-p67v","summary":"Comrak vulnerable to quadratic runtime issues when parsing Markdown (GHSL-2023-047)","modified":"2023-11-08T04:12:12.562387Z","packages":[{"ecosystem":"crates.io","name":"comrak","purl":"pkg:cargo/comrak","ranges":["<0.17.0"],"fixed":["0.17.0"]}]}],"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."]}