CVE-2025-58369

{"id": "CVE-2025-58369", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2025-09-05T22:15:34.883", "references": [{"url": "https://github.com/typelevel/fs2/commit/46e2dc3abf994dcf3d0b804b2ddb3c10c04d4976", "source": "security-advisories@github.com"}, {"url": "https://github.com/typelevel/fs2/commit/5c6c4c6c1ef330f7e6b53661ecc63d5f5ba8885c", "source": "security-advisories@github.com"}, {"url": "https://github.com/typelevel/fs2/issues/3590", "source": "security-advisories@github.com"}, {"url": "https://github.com/typelevel/fs2/releases/tag/v3.12.2", "source": "security-advisories@github.com"}, {"url": "https://github.com/typelevel/fs2/releases/tag/v3.13.0-M7", "source": "security-advisories@github.com"}, {"url": "https://github.com/typelevel/fs2/security/advisories/GHSA-rrw2-px9j-qffj", "source": "security-advisories@github.com"}], "vulnStatus": "Received", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "fs2 is a compositional, streaming I/O library for Scala. Versions 3.12.2 and lower and 3.13.0-M1 through 3.13.0-M6 is vulnerable to denial of service attacks though TLS sessions using fs2-io on the JVM using the fs2.io.net.tls package. When establishing a TLS session, if one side of the connection shuts down `write` while the peer side is awaiting more data to progress the TLS handshake, the peer side will spin loop on the socket read, fully utilizing a CPU. The CPU is consumed until the overall connection is closed, potentially shutting down a fs2-io powered server. This issue is fixed in versions 3.12.1 and 3.13.0-M7."}], "lastModified": "2025-09-05T22:15:34.883", "sourceIdentifier": "security-advisories@github.com"}