{"id":"CVE-2026-43507","aliases":["ALPINE-CVE-2026-43507","DEBIAN-CVE-2026-43507","EUVD-2026-26660","GHSA-q9r3-wmh7-jgmq","UBUNTU-CVE-2026-43507"],"status":"published","title":"An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial...","description":"An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by XML parsing resource amplification from unauthenticated connections.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00348,"percentile":0.28811,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-770"],"published":"2026-05-01T14:47:22Z","modified":"2026-11-11T23:10:00Z","fixes":[{"ecosystem":"Alpine:v3.21","package":"prosody","fixed_in":["0.12.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"prosody","fixed_in":["0.12.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"prosody","fixed_in":["13.0.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"prosody","fixed_in":["13.0.5-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"prosody","fixed_in":["0.12.3-1+deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"prosody","fixed_in":["13.0.1-1+deb131u"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"prosody","fixed_in":["13.0.5-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.21","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13.0.0"},{"fixed":"0.12.6-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13.0.0"},{"fixed":"0.12.6-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13.0.0"},{"fixed":"13.0.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13.0.0"},{"fixed":"13.0.5-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.12.3-1+deb12u1"}]}],"versions":["0.12.3-1"]},{"source":"osv","ecosystem":"Debian:13","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"13.0.1-1+deb131u"}]}],"versions":["13.0.1-1"]},{"source":"osv","ecosystem":"Debian:14","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"13.0.5-1"}]}],"versions":["13.0.1-1","13.0.2-1","13.0.3-1","13.0.4-1","13.0.4-2","13.0.4-2~bpo13+1","13.0.5-1~bpo13+1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.8-1","0.9.9-1","0.9.10-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.12-2","0.10.0-1","0.10.0-1build1","0.10.0-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.2-1","0.11.3-1","0.11.4-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.10-1","0.11.10-1build1","0.11.10-1build2","0.11.11-1","0.11.11-2","0.11.12-1","0.11.13-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.12.3-1","0.12.4-1","0.12.4-1build1","0.12.4-1build2","0.12.4-1build3"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.12.5-1build1","13.0.1-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["13.0.4-2","13.0.5-1","13.0.6-1","13.0.6-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"prosody","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["13.0.1-1","13.0.2-1","13.0.2-1build1","13.0.3-1","13.0.4-1","13.0.4-2"]}],"products":[{"vendor":"prosody","product":"prosody"}],"references":[{"url":"https://www.openwall.com/lists/oss-security/2026/05/01/5","tags":["Mailing List","Patch","Third Party Advisory"]},{"url":"https://prosody.im/security/advisory_735dd9d3/","tags":["Mitigation","Patch","Vendor Advisory","report"]},{"url":"https://blog.unionium.org/ARTICLES/1.HTM","tags":["Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43507"},{"url":"https://prosody.im/security/advisory_735dd9d3"},{"url":"https://github.com/advisories/GHSA-q9r3-wmh7-jgmq"},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-43507","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-43507","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-43507","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43507","tags":["report"]},{"url":"https://hg.prosody.im/trunk/rev/8a4417d32b0f","tags":["report"]},{"url":"https://hg.prosody.im/trunk/rev/166ac7d65cb6","tags":["report"]},{"url":"https://hg.prosody.im/trunk/rev/a4327478678f","tags":["report"]},{"url":"https://hg.prosody.im/trunk/rev/6c7549964d4d","tags":["report"]},{"url":"https://hg.prosody.im/trunk/rev/1e005ba71f0d","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-43507","description":"An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 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A Denial of Service can occur via memory exhaustion caused by XML parsing resource amplification from unauthenticated connections.","status":"published","published":"2026-05-01T14:47:22.616Z","modified":"2026-05-01T15:20:38.141Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T13:37:36.275898Z"}],"euvd":[{"id":"EUVD-2026-26660","description":"An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by XML parsing resource amplification from unauthenticated connections.","status":"published","published":"2026-05-01T14:47:22Z","modified":"2026-05-01T15:20:38Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T19:05:18.723006Z"}],"ghsa":[{"id":"GHSA-q9r3-wmh7-jgmq","title":"An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial...","description":"An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by XML parsing resource amplification from unauthenticated connections.","status":"published","published":"2026-05-01T15:30:38Z","modified":"2026-05-01T15:30:50Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T15:07:52.84276Z"}],"nvd":[{"id":"CVE-2026-43507","description":"An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by XML parsing resource amplification from unauthenticated connections.","status":"published","published":"2026-05-01T15:16:52.99Z","modified":"2026-11-11T23:10:00.263Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-770"],"updated_at":"2026-11-12T01:26:59.157514Z"}],"osv":[{"id":"ALPINE-CVE-2026-43507","description":"An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by XML parsing resource amplification from unauthenticated connections.","status":"published","published":"2026-05-01T15:16:52.99Z","modified":"2026-11-03T06:33:03.061169768Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T07:15:53.944853Z"},{"id":"DEBIAN-CVE-2026-43507","description":"An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by XML parsing resource amplification from unauthenticated connections.","status":"published","published":"2026-05-01T15:16:52.99Z","modified":"2026-11-12T09:47:30.662189324Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-12T10:16:30.501395Z"},{"id":"UBUNTU-CVE-2026-43507","description":"An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by XML parsing resource amplification from unauthenticated connections.","status":"published","published":"2026-05-01T15:16:00Z","modified":"2026-10-17T12:58:55.493890002Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:22.075798Z"}]}}