{"id":"GHSA-r6v5-fh4h-64xc","summary":"time vulnerable to stack exhaustion Denial of Service attack","details":"### Impact\n\nWhen user-provided input is provided to any type that parses with the RFC 2822 format, a denial of service attack via stack exhaustion is possible. The attack relies on formally deprecated and rarely-used features that are part of the RFC 2822 format used in a malicious manner. Ordinary, non-malicious input will never encounter this scenario.\n\n### Patches\n\nA limit to the depth of recursion was added in v0.3.47. From this version, an error will be returned rather than exhausting the stack.\n\n### Workarounds\n\nLimiting the length of user input is the simplest way to avoid stack exhaustion, as the amount of the stack consumed would be at most a factor of the length of the input.\n\nAlternatively, avoiding the format altogether would also ensure that the vulnerability is not encountered. To do this, add\n\n```toml\ndisallowed-types = [\"time::format_description::well_known::Rfc2822\"]\n```\n\nto your `clippy.toml` file. This will trigger the `clippy::disallowed_types` lint, which is warn-by-default and can be explicitly denied.","aliases":["CVE-2026-25727","RUSTSEC-2026-0009"],"modified":"2026-09-10T03:50:35.583241382Z","published":"2026-02-05T17:57:55Z","database_specific":{"nvd_published_at":"2026-02-06T20:16:11Z","cwe_ids":["CWE-121"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-02-05T17:57:55Z"},"references":[{"type":"WEB","url":"https://github.com/time-rs/time/security/advisories/GHSA-r6v5-fh4h-64xc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25727"},{"type":"WEB","url":"https://github.com/time-rs/time/commit/1c63dc7985b8fa26bd8c689423cc56b7a03841ee"},{"type":"PACKAGE","url":"https://github.com/time-rs/time"},{"type":"WEB","url":"https://github.com/time-rs/time/blob/main/CHANGELOG.md#0347-2026-02-05"},{"type":"WEB","url":"https://github.com/time-rs/time/releases/tag/v0.3.47"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2026-0009.html"}],"affected":[{"package":{"name":"time","ecosystem":"crates.io","purl":"pkg:cargo/time"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.3.6"},{"fixed":"0.3.47"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-r6v5-fh4h-64xc/GHSA-r6v5-fh4h-64xc.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H"}]}