{"cve":"CVE-2023-3635","nvd":{"published":"2023-07-12T19:15:08.983","modified":"2026-06-17T06:14:30.757","status":"Modified","description":"GzipSource does not handle an exception that might be raised when parsing a malformed gzip buffer. This may lead to denial of service of the Okio client when handling a crafted GZIP archive, by using the GzipSource class.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-681","CWE-195"],"references":["https://github.com/square/okio/commit/81bce1a30af244550b0324597720e4799281da7b","https://research.jfrog.com/vulnerabilities/okio-gzip-source-unhandled-exception-dos-xray-523195/","https://github.com/square/okio/commit/81bce1a30af244550b0324597720e4799281da7b","https://research.jfrog.com/vulnerabilities/okio-gzip-source-unhandled-exception-dos-xray-523195/"],"products":["squareup:okio"],"source":"nvd","synced_at":"2026-10-19T21:38:35.729974749+00:00"},"epss":{"cve":"CVE-2023-3635","score":0.01254,"percentile":0.69491,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-w33c-445m-f8w7","url":"https://osv.dev/vulnerability/GHSA-w33c-445m-f8w7","summary":"Okio Signed to Unsigned Conversion Error vulnerability","modified":"2026-09-10T03:49:54.860062065Z","packages":[{"ecosystem":"Maven","name":"com.squareup.okio:okio","purl":"pkg:maven/com.squareup.okio/okio","ranges":[">=2.0.0-RC1 <3.4.0"],"fixed":["3.4.0"]},{"ecosystem":"Maven","name":"com.squareup.okio:okio","purl":"pkg:maven/com.squareup.okio/okio","ranges":["<1.17.6"],"fixed":["1.17.6"]},{"ecosystem":"Maven","name":"com.squareup.okio:okio-jvm","purl":"pkg:maven/com.squareup.okio/okio-jvm","ranges":[">=2.0.0-RC1 <3.4.0"],"fixed":["3.4.0"]}]}],"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."]}