High
fcitx5 — security advisory
Buffer Overflow vulnerability in fcitx5 5.0.8 allows attackers to cause a denial of service via crafted message to the application's listening port.
- Products
- fcitx5
- Affected versions
- 0.0~git20191114.c2b3517+ds1-1, 0.0~git20191231.c0a272a+ds1-1, 0.0~git20191231.c0a272a+ds1-2, 0.0~git20200117.a2871df+ds2-1, 0.0~git20200128.9e3bc8d+ds1-1, 0.0~git20200128.9e3bc8d+ds1-2, 0.0~git20200128.9e3bc8d+ds1-3, 0~20181128+ds1-1build1, 0~20191021+ds1-1, 0~20191021+ds2-1, 0~20191021+ds2-2, 5.0.10-1, 5.0.11-1, 5.0.12-1, 5.0.13-1, 5.0.14-1, 5.0.5-1ubuntu2, 5.0.9-2, 5.1.0-1, 5.1.1-1, 5.1.12-2, 5.1.14-1, 5.1.16-1, 5.1.17-1, 5.1.19-1, 5.1.2-1, 5.1.20-1, 5.1.21-1, 5.1.22-1, 5.1.3-1, 5.1.4-1, 5.1.5-1, 5.1.6-1, 5.1.6-2, 5.1.7-1, 5.1.7-1build2, 5.1.7-1build3
- Fixed versions
- Not specified
- CVEs
- CVE-2021-37311
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:00 UTC · Revision 1
Source evidence
Buffer Overflow vulnerability in fcitx5 5.0.8 allows attackers to cause a denial of service via crafted message to the application's listening port.
osv:UBUNTU-CVE-2021-37311
fcitx5
Fixed versions: Not specified
fcitx5
Fixed versions: Not specified
fcitx5
Fixed versions: Not specified
fcitx5
Fixed versions: Not specified
fcitx5
Fixed versions: Not specified
fcitx5
Fixed versions: Not specified
Complete source record
{
"id": "a93239dbae0836eb30f6f2468a5a10c556f35443b7d17ceabb7191ebe6c4d2f4",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-37311",
"method": "structured",
"payload": {
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"modified": "2026-10-17T12:56:20.652136355Z",
"provider": "osv",
"upstream": [
"CVE-2021-37311"
],
"references": [
"https://ubuntu.com/security/CVE-2021-37311",
"https://fcitx-im.org",
"https://github.com/fcitx/fcitx5/pull/308",
"https://www.cve.org/CVERecord?id=CVE-2021-37311"
]
},
"related_cves": [
{
"value": "CVE-2021-37311",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 355348,
"published_at": "2023-02-03T18:15:00+00:00"
}