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CVE-2022-23495

25
FAUCET Score

CVE-2022-23495 is a denial-of-service vulnerability affecting the go-merkledag library, specifically within its implementation of the 'DAGService' for IPFS. Malicious manipulation of a ProtoNode can lead to unencodeable states, causing common method calls to panic due to the inability to return errors. With a CVSS score of 7.5 (HIGH), this vulnerability can be triggered remotely without authentication or user interaction, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.4.0, < 0.8.1CPE matchmatch criteria
cpe:2.3:a:protocol:go-merkledag:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 46th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/ipfs/go-merkledagFixed in: 0.8.1

Vendor Advisories (1)

goGHSA-x39j-h85h-3f46high

go-merkledag's ProtoNode may be modified such that common method calls may panic

Dec 8, 2022

References

en.wikipedia.org / wiki/Directed_acyclic_graph
Technical DescriptionThird Party Advisory
github.com / ipfs/go-merkledag/issues/90
PatchThird Party Advisory
github.com / ipfs/go-merkledag/pull/91
PatchThird Party Advisory
github.com / ipfs/go-merkledag/pull/92
PatchThird Party Advisory
github.com / ipfs/go-merkledag/pull/93
PatchThird Party Advisory
github.com / ipfs/go-merkledag/releases/tag/v0.8.0
Release NotesThird Party Advisory
github.com / ipfs/go-merkledag/releases/tag/v0.8.1
Release NotesThird Party Advisory
github.com / ipfs/go-merkledag/security/advisories/GHSA-x39j-h85h-3f46
Third Party Advisory
github.com / ipfs/kubo/issues/9297
PatchThird Party Advisory