HighFix available
webkit2gtk, wpewebkit — security advisory
A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
- Products
- webkit2gtk, wpewebkit
- Affected versions
- Not specified
- Fixed versions
- 2.30.0-1, 2.30.1-1
- CVEs
- CVE-2021-30661
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:21 UTC · Revision 1
Source evidence
A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
osv:DEBIAN-CVE-2021-30661
webkit2gtk
Fixed versions: 2.30.1-1
webkit2gtk
Fixed versions: 2.30.1-1
webkit2gtk
Fixed versions: 2.30.1-1
wpewebkit
Fixed versions: 2.30.0-1
wpewebkit
Fixed versions: 2.30.0-1
wpewebkit
Fixed versions: 2.30.0-1
Complete source record
{
"id": "aace79cb3fd004467e6a87e4306506d331d8794035a688271e12b024d4980359",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-30661",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2021-30661",
"summary": "A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..",
"evidence": "osv:DEBIAN-CVE-2021-30661",
"products": [
{
"name": {
"value": "webkit2gtk",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.30.1-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
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{
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{
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"affected_versions": []
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{
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{
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"evidence": "/affected/4/ranges"
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],
"affected_versions": []
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{
"name": {
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"evidence": "/affected/5/package/name"
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"evidence": "/affected/5/ranges"
}
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"affected_versions": []
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],
"severity": "high",
"structured": {
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"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
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"events": [
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],
"package": {
"name": "webkit2gtk",
"purl": "pkg:deb/debian/webkit2gtk?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
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"ecosystem_specific": {
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{
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"package": {
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"purl": "pkg:deb/debian/webkit2gtk?arch=source&distro=trixie",
"ecosystem": "Debian:13"
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"database_specific": {
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{
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],
"package": {
"name": "webkit2gtk",
"purl": "pkg:deb/debian/webkit2gtk?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-30661.json"
},
"ecosystem_specific": {
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{
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"package": {
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},
"database_specific": {
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}
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{
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"package": {
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"purl": "pkg:deb/debian/wpewebkit?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
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},
"ecosystem_specific": {
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},
{
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],
"package": {
"name": "wpewebkit",
"purl": "pkg:deb/debian/wpewebkit?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-30661.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:03:13.310910355Z",
"provider": "osv",
"upstream": [
"CVE-2021-30661"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2021-30661"
]
},
"related_cves": [
{
"value": "CVE-2021-30661",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 420857,
"published_at": "2021-09-08T15:15:13.32+00:00"
}