{"id":"CVE-2022-31099","aliases":["EUVD-2022-6161","GHSA-v78m-2q7v-fjqp","RUSTSEC-2022-0030"],"status":"published","title":"Uncontrolled Recursion in rulex","description":"rulex is a new, portable, regular expression language. When parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately. This is a security concern for you, if your service parses untrusted rulex expressions (expressions provided by an untrusted user), and your service becomes unavailable when the process running rulex aborts due to a stack overflow. The crash is fixed in version **0.4.3**. Affected users are advised to update to this version. There are no known workarounds for this issue.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00969,"percentile":0.62117,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-674"],"published":"2022-05-21T12:00:00Z","modified":"2026-10-28T02:30:36Z","fixes":[{"ecosystem":"crates.io","package":"rulex","fixed_in":["0.4.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"rulex","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.3"}]}]},{"source":"osv","ecosystem":"crates.io","package":"rulex","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.4.3"}]}]},{"source":"osv","ecosystem":"crates.io","package":"rulex","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"0.4.3"}]}]}],"products":[{"vendor":"pomsky-lang","product":"pomsky"},{"vendor":"rulex-rs","product":"rulex"}],"references":[{"url":"https://github.com/rulex-rs/rulex/security/advisories/GHSA-v78m-2q7v-fjqp","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/rulex-rs/rulex/commit/60aa2dc03a22d69c8800fec81f99c96958a11363","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-31099","tags":["advisory"]},{"url":"https://rustsec.org/advisories/RUSTSEC-2022-0030.html","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-v78m-2q7v-fjqp"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31099.json","tags":["advisory"]},{"url":"https://github.com/rulex-rs/rulex","tags":["package"]},{"url":"https://crates.io/crates/rulex","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2022-31099","title":"Uncontrolled Recursion in rulex","description":"rulex is a new, portable, regular expression language. When parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately. This is a security concern for you, if your service parses untrusted rulex expressions (expressions provided by an untrusted user), and your service becomes unavailable when the process running rulex aborts due to a stack overflow. The crash is fixed in version **0.4.3**. Affected users are advised to update to this version. There are no known workarounds for this issue.","status":"published","published":"2022-06-27T22:10:20Z","modified":"2025-04-23T18:06:21.333Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:34:35.615708Z"}],"euvd":[{"id":"EUVD-2022-6161","description":"rulex is a new, portable, regular expression language. When parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately. This is a security concern for you, if your service parses untrusted rulex expressions (expressions provided by an untrusted user), and your service becomes unavailable when the process running rulex aborts due to a stack overflow. The crash is fixed in version **0.4.3**. Affected users are advised to update to this version. There are no known workarounds for this issue.","status":"published","published":"2022-06-27T22:10:20Z","modified":"2025-04-23T18:06:21Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T20:52:09.919052Z"}],"ghsa":[{"id":"GHSA-v78m-2q7v-fjqp","title":"Uncontrolled Recursion in rulex","description":"### Impact\nWhen parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately.\n\nThis is a security concern for you, if\n- your service parses untrusted rulex expressions (expressions provided by an untrusted user), and\n- your service becomes unavailable when the process running rulex aborts due to a stack overflow.\n\n### Patches\nThe crash is fixed in version **0.4.3**. Affected users are advised to update to this version.\n\n### Workarounds\nNone.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [rulex](https://github.com/rulex-rs/rulex/issues)\n* Email me at [ludwig.stecher@gmx.de](mailto:ludwig.stecher@gmx.de)\n\n### Credits\n\nCredit for finding these bugs goes to\n\n- [evanrichter](https://github.com/evanrichter)\n- [ForAllSecure Mayhem](https://forallsecure.com/)\n- [cargo fuzz](https://github.com/rust-fuzz/cargo-fuzz) and [afl.rs](https://github.com/rust-fuzz/afl.rs)","status":"published","published":"2022-06-22T17:52:51Z","modified":"2023-01-27T05:05:04Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:36:21.8171Z"}],"nvd":[{"id":"CVE-2022-31099","description":"rulex is a new, portable, regular expression language. When parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately. This is a security concern for you, if your service parses untrusted rulex expressions (expressions provided by an untrusted user), and your service becomes unavailable when the process running rulex aborts due to a stack overflow. The crash is fixed in version **0.4.3**. Affected users are advised to update to this version. There are no known workarounds for this issue.","status":"published","published":"2022-06-27T23:15:08.043Z","modified":"2026-06-17T04:44:47.717Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:07:22.966735Z"}],"osv":[{"id":"CVE-2022-31099","title":"Uncontrolled Recursion in rulex","description":"rulex is a new, portable, regular expression language. When parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately. This is a security concern for you, if your service parses untrusted rulex expressions (expressions provided by an untrusted user), and your service becomes unavailable when the process running rulex aborts due to a stack overflow. The crash is fixed in version **0.4.3**. Affected users are advised to update to this version. There are no known workarounds for this issue.","status":"published","published":"2022-06-27T22:10:20Z","modified":"2026-10-28T02:30:36.64084083Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T15:44:25.516981Z"},{"id":"GHSA-v78m-2q7v-fjqp","title":"Uncontrolled Recursion in rulex","description":"### Impact\nWhen parsing untrusted rulex expressions, the stack may overflow, possibly enabling a Denial of Service attack. This happens when parsing an expression with several hundred levels of nesting, causing the process to abort immediately.\n\nThis is a security concern for you, if\n- your service parses untrusted rulex expressions (expressions provided by an untrusted user), and\n- your service becomes unavailable when the process running rulex aborts due to a stack overflow.\n\n### Patches\nThe crash is fixed in version **0.4.3**. Affected users are advised to update to this version.\n\n### Workarounds\nNone.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [rulex](https://github.com/rulex-rs/rulex/issues)\n* Email me at [ludwig.stecher@gmx.de](mailto:ludwig.stecher@gmx.de)\n\n### Credits\n\nCredit for finding these bugs goes to\n\n- [evanrichter](https://github.com/evanrichter)\n- [ForAllSecure Mayhem](https://forallsecure.com/)\n- [cargo fuzz](https://github.com/rust-fuzz/cargo-fuzz) and [afl.rs](https://github.com/rust-fuzz/afl.rs)","status":"published","published":"2022-06-22T17:52:51Z","modified":"2023-11-08T04:09:25.959683Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T15:46:56.981655Z"},{"id":"RUSTSEC-2022-0030","title":"Stack overflow during recursive expression parsing","description":"When parsing untrusted rulex expressions, the stack may overflow, possibly\nenabling a Denial of Service attack. This happens when parsing an expression\nwith several hundred levels of nesting, causing the process to abort\nimmediately.\n\nThe flaw was corrected in commits `60aa2dc03a` by adding a check to recursion\ndepth.","status":"published","published":"2022-05-21T12:00:00Z","modified":"2026-10-12T18:00:05.11933387Z","updated_at":"2026-11-02T15:53:39.971022Z"}]}}