{"schema_version":"1.7.5","id":"GHSA-w879-237q-wc7r","published":"2026-06-25T22:18:43Z","modified":"2026-07-20T12:46:21.987981482Z","aliases":["CVE-2026-39829","GO-2026-5018"],"related":["CGA-93p6-7w5m-x8fx"],"summary":"golang.org/x/crypto: Invoking pathological RSA/DSA parameters may cause DoS","details":"The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.","affected":[{"package":{"name":"golang.org/x/crypto","ecosystem":"Go","purl":"pkg:golang/golang.org/x/crypto"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.52.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-w879-237q-wc7r/GHSA-w879-237q-wc7r.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39829"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37387"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40118"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40119"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40262"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40945"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40969"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40972"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:40974"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:41019"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:41031"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:41036"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:41055"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:41066"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-39829"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2480681"},{"type":"PACKAGE","url":"https://cs.opensource.google/go/x/crypto"},{"type":"WEB","url":"https://go.dev/cl/781641"},{"type":"WEB","url":"https://go.dev/cl/781661"},{"type":"WEB","url":"https://go.dev/issue/79565"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/a082jnz-LvI"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2026-5018"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39829.json"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:26546"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:26547"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:29455"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:35833"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36199"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36207"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36319"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36625"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36648"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36651"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36796"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36797"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36808"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36820"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:36883"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37072"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37123"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37268"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37271"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37272"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37278"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37286"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:37296"}],"database_specific":{"cwe_ids":["CWE-1284","CWE-347"],"github_reviewed":true,"github_reviewed_at":"2026-06-25T22:18:43Z","nvd_published_at":"2026-05-22T04:16:22Z","severity":"HIGH"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}