CVE-2022-1941
No exploitation reported by the sources we read.
- Published2022-09-22
- Fixed in4.21.6 · 3.21.6 · 3.20.2 · 3.19.5 · 3.18.3
- WeaknessCWE-1286
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A parsing vulnerability for the MessageSet type in the ProtocolBuffers versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 3.21.5 for protobuf-cpp, and versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 4.21.5 for protobuf-python can lead to out of memory failures. A specially crafted message with multiple key-value per elements creates parsing issues, and can lead to a Denial of Service against services receiving unsanitized input. We recommend upgrading to versions 3.18.3, 3.19.5, 3.20.2, 3.21.6 for protobuf-cpp and 3.18.3, 3.19.5, 3.20.2, 4.21.6 for protobuf-python. Versions for 3.16 and 3.17 are no longer updated.
Timeline
dates in UTC- 2022-09-2215:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-1941?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-1941?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
OSV · NVD · CISA-ADP| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.x | ≥ 4.0.0, < 4.21.6 | 4.21.6 | OSV |
| 3.21 | ≥ 3.21.0, < 3.21.6 | 3.21.6 | NVD · CISA-ADP |
| 3.20 | ≥ 3.20.0, < 3.20.2 | 3.20.2 | NVD · CISA-ADP · OSV |
| 3.19 | ≥ 3.19.0, < 3.19.5 | 3.19.5 | NVD · CISA-ADP · OSV |
| 3.18 | < 3.18.3 | 3.18.3 | NVD · CISA-ADP · OSV |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.x | ≥ 4.0.0, < 4.21.6 | 4.21.6 | NVD · CISA-ADP |
| 3.20 | ≥ 3.20.0, < 3.20.2 | 3.20.2 | NVD · CISA-ADP |
| 3.19 | ≥ 3.19.0, < 3.19.5 | 3.19.5 | NVD · CISA-ADP |
| 3.18 | < 3.18.3 | 3.18.3 | NVD · CISA-ADP |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 36.x | = 36 | no fix published | NVD |
| 37.x | = 37 | no fix published | NVD |
1 more product in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- protobufAlmaLinux:9all versions · fixed in 3.14.0-16.el9and 5 other packages
Fix
- Update Google protobuf-cpp to 4.21.6 · 3.21.6 · 3.20.2 · 3.19.5 · 3.18.3
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2022-09-22
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2022-1941?
Is CVE-2022-1941 actively exploited?
What is the CVSS score for CVE-2022-1941?
Running protobuf? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Go further
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.