{"cve":"CVE-2026-2303","nvd":{"published":"2026-02-10T20:17:00.757","modified":"2026-06-17T10:30:45.163","status":"Deferred","description":"The mongo-go-driver repository contains CGo bindings for GSSAPI (Kerberos) authentication on Linux and macOS. The C wrapper implementation contains a heap out-of-bounds read vulnerability due to incorrect assumptions about string termination in the GSSAPI standard. Since GSSAPI buffers are not guaranteed to be null-terminated or have extra padding, this results in reading one byte past the allocated heap buffer.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":6.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","score":6.5},"cwes":["CWE-183"],"references":["https://jira.mongodb.org/browse/GODRIVER-3770"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:23:35.260773158+00:00"},"epss":{"cve":"CVE-2026-2303","score":0.00318,"percentile":0.2482,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-cp6g-7hqx-qxhp","url":"https://osv.dev/vulnerability/GHSA-cp6g-7hqx-qxhp","summary":"mongo-go-driver has Heap Out-of-Bounds Read in GSSAPI Error Handling","modified":"2026-09-10T03:50:59.479851584Z","packages":[{"ecosystem":"Go","name":"go.mongodb.org/mongo-driver","purl":"pkg:golang/go.mongodb.org/mongo-driver","ranges":["<1.17.7"],"fixed":["1.17.7"]},{"ecosystem":"Go","name":"go.mongodb.org/mongo-driver/v2","purl":"pkg:golang/go.mongodb.org/mongo-driver/v2","ranges":["<2.4.2"],"fixed":["2.4.2"]}]},{"id":"GO-2026-5327","url":"https://osv.dev/vulnerability/GO-2026-5327","summary":"Mongo-go-driver: Heap Out-of-Bounds Read in GSSAPI Error Handling in go.mongodb.org/mongo-driver","modified":"2026-08-18T16:27:02.119904677Z","packages":[{"ecosystem":"Go","name":"go.mongodb.org/mongo-driver","purl":"pkg:golang/go.mongodb.org/mongo-driver","ranges":["<1.17.7"],"fixed":["1.17.7"]},{"ecosystem":"Go","name":"go.mongodb.org/mongo-driver/v2","purl":"pkg:golang/go.mongodb.org/mongo-driver/v2","ranges":["<2.4.2"],"fixed":["2.4.2"]}]}],"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."]}