{"schema":"threatline.record/2","record":{"id":"CVE-2026-107348","aliases":[],"summary":"Integer overflow causes an infinite loop in message buffer growth in PgBouncer","details":"Integer overflow in the message buffer growth logic (mbuf_make_room) in PgBouncer 1.21.0 through 1.26.0 allows a remote attacker to cause a denial of service when max_packet_size is configured above 2147483648. A packet header declaring a length above 2^31 makes the buffer size computation overflow, leaving the growth loop unable to terminate. Because PgBouncer serves all clients from a single process, this saturates a CPU core and stalls every pooled connection until the process is restarted. Since 1.23.0 the overflow is reachable before authentication with a five-byte packet header.","categories":["Unclassified"],"product":"PgBouncer","vendor":"n/a","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107348","source_modified_at":"2026-10-16T20:11:22.132Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"PgBouncer","vendor":"n/a","versions":[{"version":"1.21.0","lessThan":"1.26.1","versionType":"semver","status":"affected"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107348","source_modified_at":"2026-10-16T20:11:22.132Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"PgBouncer","ecosystem":null},"version":"1.26.1","basis":"first unaffected version stated in the CVE record"}],"cvss":5.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00392,"percentile":0.321,"score_date":"2026-10-23"},"published_at":"2026-10-14T17:34:29.838Z","modified_at":"2026-10-16T20:11:22.132Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-107348","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T20:11:22.132Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-107348","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.pgbouncer.org/changelog.html"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-16T20:11:07.942275Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T20:11:22.132Z","content_hash":"892debd356a0f8f62ba433283aafa671bb27f7649497e3cfc7129551542b5733"}}