CVE-2022-47547Public exploitNetwork attack vector

Message suppression via cross-topic score offset

Published Dec 19, 2022 · Updated Apr 17, 2025

Improper peer scoring in GossipSub 1.1 for Ethereum 2.0 allows remote attackers to suppress selected topic messages. The Eth2.0 scoring configuration aggregates behavior across topics, letting positive contributions from honestly served topics offset penalties for topics where a peer forwards nothing. A participating peer must behave normally on enough other topics; it can then block or throttle selected topics without being pruned, while coordinated peers can eclipse victims or partition topic delivery.

CVSS severity5.3
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper peer scoring in GossipSub 1.1 for Ethereum 2.0 allows remote attackers to suppress selected topic messages. The Eth2.0 scoring configuration aggregates behavior across topics, letting positive contributions from honestly served topics offset penalties for topics where a peer forwards nothing. A participating peer must behave normally on enough other topics; it can then block or throttle selected topics without being pruned, while coordinated peers can eclipse victims or partition topic delivery.

The record

CVE
CVE-2022-47547
Published
Dec 19, 2022
Updated
Apr 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-281, T1565.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-281Improper Preservation of Permissions
T1565.002Transmitted Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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