CVE-2021-3466
- Source
- https://cve.org/CVERecord?id=CVE-2021-3466
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3466.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-3466
- Downstream
- Published
- 2021-03-25T19:15:15.297Z
- Modified
- 2026-03-10T23:37:16.529451Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
A flaw was found in libmicrohttpd. A missing bounds check in the postprocessurlencoded function leads to a buffer overflow, allowing a remote attacker to write arbitrary data in an application that uses libmicrohttpd. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Only version 0.9.70 is vulnerable.
- References
-
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4334XJNDJPYQNFE6S3S2KUJJ7TMHYCWL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/75HDMREKITMGPGE62NP7KE62ZJVLETXN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K5NEPVGP3L2CZHLZ4UB44PEILHKPDBOG/
- https://security.gentoo.org/glsa/202311-08
- https://bugzilla.redhat.com/show_bug.cgi?id=1939127
Affected packages
Git /
Database specific
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.9.70"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "6.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "7.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "8.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "32"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "33"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "34"
}
]
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3466.json"