CVE-2020-8955

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Source
https://cve.org/CVERecord?id=CVE-2020-8955
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-8955.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-8955
Downstream
Related
Published
2020-02-12T22:15:13.207Z
Modified
2026-05-30T17:07:39.538335Z
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

ircmodechannel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a malformed IRC message 324 (channel mode).

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "CPE_RANGE",
            "cpes": [
                "cpe:2.3:a:weechat:weechat:*:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "0.3.8"
                },
                {
                    "last_affected": "2.7"
                }
            ],
            "vendor_product": "weechat:weechat"
        },
        {
            "source": "CPE_STRING",
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "last_affected": "8.0"
                },
                {
                    "last_affected": "9.0"
                }
            ],
            "vendor_product": "debian:debian_linux"
        },
        {
            "source": "CPE_STRING",
            "cpes": [
                "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "last_affected": "30"
                },
                {
                    "last_affected": "31"
                },
                {
                    "last_affected": "32"
                }
            ],
            "vendor_product": "fedoraproject:fedora"
        },
        {
            "source": "CPE_STRING",
            "cpes": [
                "cpe:2.3:a:opensuse:backports_sle:15.0:-:*:*:*:*:*:*",
                "cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "last_affected": "15.0-NA"
                },
                {
                    "last_affected": "15.0-sp1"
                }
            ],
            "vendor_product": "opensuse:backports_sle"
        },
        {
            "source": "CPE_STRING",
            "cpes": [
                "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "last_affected": "15.1"
                }
            ],
            "vendor_product": "opensuse:leap"
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "fixed": "2.7"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/weechat/weechat

Affected ranges

Type
GIT
Repo
https://github.com/weechat/weechat
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74da
Database specific 
{
    "source": "REFERENCES"
}

Affected versions

Other
release-0-0-1
release-0-0-2
release-0-0-3
release-0-0-4
release-0-0-5
release-0-0-6
release-0-0-7
release-0-0-8
release-0-0-9
release-0-1-0
release-0-1-1
release-0-1-2
release-0-1-3
release-0-1-4
release-0-1-5
release-0-1-6
release-0-1-7
release-0-1-8
release-0-1-9
release-0-2-0
release-0-2-1
release-0-2-2
release-0-2-3
release-0-2-4
release-0-2-5
v0.*
v0.0.1
v0.0.2
v0.0.3
v0.0.4
v0.0.5
v0.0.6
v0.0.7
v0.0.8
v0.0.9
v0.1.0
v0.1.1
v0.1.2
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.1.7
v0.1.8
v0.1.9
v0.2.0
v0.2.1
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.2.6
v0.3.0
v0.3.0-rc1
v0.3.0-rc2
v0.3.0-rc3
v0.3.1
v0.3.2
v0.3.2-rc1
v0.3.3
v0.3.3-rc1
v0.3.3-rc2
v0.3.3-rc3
v0.3.4
v0.3.4-rc1
v0.3.4-rc2
v0.3.4-rc3
v0.3.5
v0.3.5-rc1
v0.3.5-rc2
v0.3.5-rc3
v0.3.6
v0.3.6-rc1
v0.3.6-rc2
v0.3.6-rc3
v0.3.7
v0.3.7-rc1
v0.3.7-rc2
v0.3.7-rc3
v0.3.8
v0.3.8-rc1
v0.3.8-rc2
v0.3.9
v0.3.9-rc1
v0.3.9-rc2
v0.4.0
v0.4.0-rc1
v0.4.0-rc2
v0.4.0-rc3
v0.4.1
v0.4.1-rc1
v0.4.1-rc2
v0.4.2
v0.4.2-rc1
v0.4.2-rc2
v0.4.3
v0.4.3-rc1
v0.4.3-rc2
v1.*
v1.0
v1.0-rc1
v1.0-rc2
v1.0-rc3
v1.1
v1.1-rc1
v1.1-rc2
v1.2
v1.2-rc1
v1.2-rc2
v1.3
v1.3-rc1
v1.3-rc2
v1.4
v1.4-rc1
v1.4-rc2
v1.5
v1.5-rc1
v1.5-rc2
v1.6
v1.6-rc1
v1.6-rc2
v1.7
v1.7-rc1
v1.7-rc2
v1.8
v1.8-rc1
v1.9
v1.9-rc1
v1.9-rc2
v2.*
v2.0
v2.0-rc1
v2.1
v2.1-rc1
v2.2
v2.2-rc1
v2.2-rc2
v2.3
v2.3-rc1
v2.4
v2.4-rc1
v2.5
v2.5-rc1
v2.5-rc2
v2.6
v2.6-rc1
v2.6-rc2
v2.7
v2.7-rc1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-8955.json"
vanir_signatures 
[
    {
        "target": {
            "file": "src/plugins/irc/irc-mode.c",
            "function": "irc_mode_channel_update"
        },
        "deprecated": false,
        "digest": {
            "function_hash": "223350524238790654043842164543245510326",
            "length": 2502.0
        },
        "id": "CVE-2020-8955-1b8299ba",
        "source": "https://github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74da",
        "signature_version": "v1",
        "signature_type": "Function"
    },
    {
        "target": {
            "file": "src/plugins/irc/irc-mode.c"
        },
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "200879968070498314343440529766462460162",
                "267790770994180775470654757621928752132",
                "84311193978423127644732102481155587185",
                "37738585302980977653187765980868653464",
                "103144408093402382474082176671652325727",
                "248047512738540522610242778759283707096",
                "13726779807730142557510816354576803671",
                "304711207680069284387163760563633707915",
                "134091926362240965518819909662205922465",
                "77567932931264461531056880510287982960",
                "61653280659459939285653700726216165635",
                "144127429652462822056848416788256299906",
                "293177098233781010308844640392180242208",
                "285905928978361185004924297576737108114"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2020-8955-afbcfe2f",
        "source": "https://github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74da",
        "signature_version": "v1",
        "signature_type": "Line"
    }
]
vanir_signatures_modified 
"2026-05-30T17:07:39Z"