{"id":"CVE-2023-34620","aliases":["GHSA-5wfc-hjrc-gq87","GO-2026-5157"],"title":"hjson stack exhaustion vulnerability","summary":"hjson stack exhaustion vulnerability","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"hjson","product":"org.hjson:hjson","ecosystem":"maven","affected":["org.hjson:hjson < 3.0.1","laktak/hjson < 2.3.0","github.com/hjson/hjson-go/v4 < 4.5.0"],"patched":["org.hjson:hjson 3.0.1","laktak/hjson 2.3.0","github.com/hjson/hjson-go/v4 4.5.0"],"published":"2023-06-14","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:50:02.120371256Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-5wfc-hjrc-gq87","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34620"},{"url":"https://github.com/hjson/hjson-java/issues/24"},{"url":"https://github.com/hjson/hjson-cpp/pull/54"},{"url":"https://github.com/hjson/hjson-go/pull/67"},{"url":"https://github.com/hjson/hjson-php/pull/45"},{"url":"https://github.com/hjson/hjson-go/commit/326599cebc6ef759892f473bf1439b98466a99fa"},{"url":"https://github.com/hjson/hjson-php/commit/2d1b8b4b158a8d841f3a228f267c7cd84fe5a4fa"}],"tags":["osv","maven"],"epss":0.00778,"epssPercentile":0.54362,"ingestedAt":"2026-09-12T03:13:01.756Z","slug":"CVE-2023-34620","body":"## Overview\n\nAn issue was discovered hjson through 3.0.0 allows attackers to cause a denial of service or other unspecified impacts via crafted objects that deeply nested structures.\n\n## Affected packages\n\n- `org.hjson:hjson < 3.0.1`\n- `laktak/hjson < 2.3.0`\n- `github.com/hjson/hjson-go/v4 < 4.5.0`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `org.hjson:hjson 3.0.1`\n- `laktak/hjson 2.3.0`\n- `github.com/hjson/hjson-go/v4 4.5.0`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}