{"id":"GHSA-32fw-gq77-f2f2","revision":null,"records":[{"revision":"443bf4892a524096baf07f2d33748fc7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-10543","aliases":[],"title":"In Eclipse Paho Go MQTT v3.1 library (paho.mqtt.golang) versions <=1.5.0 UTF-8 encoded strings, passed into the library, may be incorrectly encoded if their length exceeds 65535 bytes. This may lead to unexpected content in packets sent to …","description":"In Eclipse Paho Go MQTT v3.1 library (paho.mqtt.golang) versions <=1.5.0 UTF-8 encoded strings, passed into the library, may be incorrectly encoded if their length exceeds 65535 bytes. This may lead to unexpected content in packets sent to the server (for example, part of an MQTT topic may leak into the message body in a PUBLISH packet).\n\n\nThe issue arises because the length of the data passed in was converted from an int64/int32 (depending upon CPU) to an int16 without checks for overflows. The int16 length was then written, followed by the data (e.g. topic). This meant that when the data (e.g. topic) was over 65535 bytes then the amount of data written exceeds what the length field indicates. This could lead to a corrupt packet, or mean that the excess data leaks into another field (e.g. topic leaks into message body).","state":0,"publishedAt":"2025-12-02T08:18:16.724+00:00","modifiedAt":"2025-12-02T13:55:51.665+00:00","affected":[{"ecosystem":"Vendor product","name":"paho.mqtt.golang (Go MQTT v3.1 library)","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"product\": \"paho.mqtt.golang (Go MQTT v3.1 library)\",\n                    \"vendor\": \"Eclipse Foundation\",\n                    \"versions\": [\n                        {\n                            \"lessThanOrEqual\": \"1.5.0\",\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","score":6.3,"severity":"MEDIUM"}],"references":["https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/254"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-10543","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-10543","identifiers":["CVE-2025-10543"]},"retained":false,"historicalAffected":[]},{"revision":"30aa2f3e89474e1382c2bd296c79976f","observedAt":"2026-11-09T02:09:57.73+00:00","statement":{"source":"euvd","id":"EUVD-2025-200211","aliases":["CVE-2025-10543","GHSA-32fw-gq77-f2f2"],"title":"In Eclipse Paho Go MQTT v3.1 library (paho.mqtt.golang) versions <=1.5.0 UTF-8 encoded strings, passed into the library, may be incorrectly encoded if their length exceeds 65535 bytes. This may lead to unexpected content in packets sent to …","description":"In Eclipse Paho Go MQTT v3.1 library (paho.mqtt.golang) versions <=1.5.0 UTF-8 encoded strings, passed into the library, may be incorrectly encoded if their length exceeds 65535 bytes. This may lead to unexpected content in packets sent to the server (for example, part of an MQTT topic may leak into the message body in a PUBLISH packet).\n\n\nThe issue arises because the length of the data passed in was converted from an int64/int32 (depending upon CPU) to an int16 without checks for overflows. The int16 length was then written, followed by the data (e.g. topic). This meant that when the data (e.g. topic) was over 65535 bytes then the amount of data written exceeds what the length field indicates. This could lead to a corrupt packet, or mean that the excess data leaks into another field (e.g. topic leaks into message body).","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","score":6.3,"severity":null}],"references":["https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/254"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-200211","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Dec 2, 2025, 8:18:16 AM","dateUpdated":"Dec 2, 2025, 1:55:51 PM"},"relatedAdvisories":[{"id":"msrc_CVE-2025-10543","title":"CVE-2025-10543","vulnerabilityIds":["CVE-2025-10543"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2025-200211","identifiers":["EUVD-2025-200211","CVE-2025-10543","GHSA-32fw-gq77-f2f2"]},"retained":false,"historicalAffected":[]},{"revision":"68381550dee24eb5a04ad21a9639b9fc","observedAt":"2026-10-25T01:17:23.283+00:00","statement":{"source":"nvd","id":"CVE-2025-10543","aliases":[],"title":"In Eclipse Paho Go MQTT v3.1 library (paho.mqtt.golang) versions <=1.5.0 UTF-8 encoded strings, passed into the library, may be incorrectly encoded if their length exceeds 65535 bytes. This may lead to unexpected content in packets sent to …","description":"In Eclipse Paho Go MQTT v3.1 library (paho.mqtt.golang) versions <=1.5.0 UTF-8 encoded strings, passed into the library, may be incorrectly encoded if their length exceeds 65535 bytes. This may lead to unexpected content in packets sent to the server (for example, part of an MQTT topic may leak into the message body in a PUBLISH packet).\n\n\nThe issue arises because the length of the data passed in was converted from an int64/int32 (depending upon CPU) to an int16 without checks for overflows. The int16 length was then written, followed by the data (e.g. topic). This meant that when the data (e.g. topic) was over 65535 bytes then the amount of data written exceeds what the length field indicates. This could lead to a corrupt packet, or mean that the excess data leaks into another field (e.g. topic leaks into message body).","state":0,"publishedAt":"2025-12-02T09:15:46.127+00:00","modifiedAt":"2026-10-18T18:10:00.1+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · emo@eclipse.org · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":6.3,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/254"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-10543","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-197","CWE-681"],"productCriteria":["cpe:2.3:a:eclipse:paho_mqtt:*:*:*:*:*:go:*:*"],"sourceDates":{"published":"2025-12-02T09:15:46.127","lastModified":"2026-10-18T18:10:00.100"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2025-10543","identifiers":["CVE-2025-10543"]},"retained":false,"historicalAffected":[]},{"revision":"8c2c63e75766465183ef87ee7b130704","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-32fw-gq77-f2f2","aliases":["CVE-2025-10543","GO-2025-4173"],"title":"Eclipse Paho Go MQTT may incorrectly encode strings if length exceeds 65535 bytes","description":"In Eclipse Paho Go MQTT v3.1 library (paho.mqtt.golang) versions <=1.5.0 UTF-8 encoded strings, passed into the library, may be incorrectly encoded if their length exceeds 65535 bytes. This may lead to unexpected content in packets sent to the server (for example, part of an MQTT topic may leak into the message body in a PUBLISH packet).\n\nThe issue arises because the length of the data passed in was converted from an int64/int32 (depending upon CPU) to an int16 without checks for overflows. The int16 length was then written, followed by the data (e.g. topic). This meant that when the data (e.g. topic) was over 65535 bytes then the amount of data written exceeds what the length field indicates. This could lead to a corrupt packet, or mean that the excess data leaks into another field (e.g. topic leaks into message body).","state":0,"publishedAt":"2025-12-02T09:30:26+00:00","modifiedAt":"2026-09-10T03:50:31.1885573+00:00","affected":[{"ecosystem":"Go","name":"github.com/eclipse/paho.mqtt.golang","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.5.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2025-10543","https://github.com/eclipse-paho/paho.mqtt.golang/issues/730","https://github.com/eclipse-paho/paho.mqtt.golang/pull/714","https://github.com/alpinelinux/build-server-status/commit/e3487897db32c8c3d0287643f8384a6669e93731","https://github.com/advisories/GHSA-32fw-gq77-f2f2","https://github.com/eclipse-paho/paho.mqtt.golang","https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/254"],"sourceUrl":"https://github.com/advisories/GHSA-32fw-gq77-f2f2","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-32fw-gq77-f2f2","identifiers":["GHSA-32fw-gq77-f2f2","CVE-2025-10543","GO-2025-4173"]},"retained":false,"historicalAffected":[]},{"revision":"eaec55be2c364a8c829273d50bdd6828","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2025-4173","aliases":["CVE-2025-10543","GHSA-32fw-gq77-f2f2"],"title":"Eclipse Paho Go MQTT may incorrectly encode strings if length exceeds 65535 bytes in github.com/eclipse/paho.mqtt.golang","description":"Eclipse Paho Go MQTT may incorrectly encode strings if length exceeds 65535 bytes in github.com/eclipse/paho.mqtt.golang","state":0,"publishedAt":"2025-12-15T20:37:41+00:00","modifiedAt":"2026-02-04T03:35:12.27772+00:00","affected":[{"ecosystem":"Go","name":"github.com/eclipse/paho.mqtt.golang","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.5.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/advisories/GHSA-32fw-gq77-f2f2","https://github.com/alpinelinux/build-server-status/commit/e3487897db32c8c3d0287643f8384a6669e93731","https://github.com/eclipse-paho/paho.mqtt.golang/issues/730","https://github.com/eclipse-paho/paho.mqtt.golang/pull/714","https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/254"],"sourceUrl":"https://osv.dev/vulnerability/GO-2025-4173","license":"OSV · upstream source license applies","key":"osv:GO-2025-4173","identifiers":["GO-2025-4173","CVE-2025-10543","GHSA-32fw-gq77-f2f2"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T06:02:15.5744295+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-09T06:02:15.5744295+00:00","lastSuccessAt":"2026-11-09T06:02:15.8100724+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:15.8100756+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-61bf15172f364246efc204ad9b25e3f89710939e13c23b3efb3d009b5fdad808","complete":true,"records":421290,"lastAttemptAt":"2026-11-09T06:02:14.4940664+00:00","lastSuccessAt":"2026-11-09T05:02:14.5253969+00:00","error":"HttpRequestException","lastVerifiedAt":"2026-11-09T05:02:14.5383867+00:00","snapshotPublishedAt":"2026-11-09T04:29:38+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-52f0bd58a8564ba89a1952b43ef3bc92","complete":false,"records":13654,"lastAttemptAt":"2026-11-09T06:14:09.0160642+00:00","lastSuccessAt":"2026-11-09T06:14:09.013+00:00","error":"8 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T06:14:09.013+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13674,"expectedIdentifiers":13706,"failedIdentifiers":8},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T06:02:15.5744295+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T06:02:15.5744295+00:00","lastSuccessAt":"2026-11-09T06:02:15.8108397+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:15.81084+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-5a44a451442747cb81d83104fe1e7771","complete":true,"records":13666,"lastAttemptAt":"2026-11-09T06:02:16.371904+00:00","lastSuccessAt":"2026-11-09T02:08:52.274+00:00","error":null,"lastVerifiedAt":"2026-11-09T02:08:52.274+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-09T06:02:15.5156789+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:15.5156789+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T06:02:14.6970768+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:14.6970768+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-f6d341f4320a5a0c059c28102ee651c3dd06abc87b84d2bafa4e2a823ec07d35","complete":true,"records":3056,"lastAttemptAt":"2026-11-09T06:02:15.5284383+00:00","lastSuccessAt":"2026-11-09T05:02:23.1539412+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:15.5284383+00:00","snapshotPublishedAt":"2026-11-09T04:47:48+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-6a1c845b1938b1aa788f0e95c9ac8a8d5a1f07caed5d155840b0616b548c1455","complete":true,"records":231296,"lastAttemptAt":"2026-11-09T06:02:15.4064738+00:00","lastSuccessAt":"2026-11-09T04:03:49.859595+00:00","error":null,"lastVerifiedAt":"2026-11-09T06:02:15.4064738+00:00","snapshotPublishedAt":"2026-11-09T03:33:06+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}