Medium
Security advisory
An issue in protobuf-java allowed the interleaving of com.google.protobuf.UnknownFieldSet fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-22569
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:25 UTC · Revision 1
Source evidence
An issue in protobuf-java allowed the interleaving of com.google.protobuf.UnknownFieldSet fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.
osv:CVE-2021-22569
Complete source record
{
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"url": "https://osv.dev/vulnerability/CVE-2021-22569",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-22569",
"summary": "An issue in protobuf-java allowed the interleaving of com.google.protobuf.UnknownFieldSet fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.",
"evidence": "osv:CVE-2021-22569",
"products": [],
"severity": "medium",
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"aliases": [
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"GHSA-wrvw-hg22-4m67"
],
"metrics": [
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}
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"affected": [
{
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{
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{
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{
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],
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{
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{
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{
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{
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],
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}
]
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}
],
"versions": [
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"v3.19.0",
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"v3.16.0-rc1",
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"v3.0.0-beta-2",
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"v3.0.0-beta-1",
"v3.0.0-alpha-4",
"v3.0.0-alpha-3",
"v2.6.1rc1",
"v2.6.0"
],
"database_specific": {
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"vanir_signatures": [
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"target": {
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{
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"target": {
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{
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{
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],
"modified": "2026-10-24T14:22:10.393983237Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2023/04/msg00019.html",
"https://cloud.google.com/support/bulletins#gcp-2022-001",
"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39330",
"https://www.oracle.com/security-alerts/cpuapr2022.html"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
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{
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},
{
"cpes": [
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],
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{
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{
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{
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{
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{
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{
"cpes": [
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{
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{
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{
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{
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},
"related_cves": [
{
"value": "CVE-2021-22569",
"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 443657,
"published_at": "2022-01-10T14:10:16.747+00:00"
}