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CVE-2021-41087

22
FAUCET Score

CVE-2021-41087 affects in-toto-golang, a Go implementation of the in-toto software supply chain integrity framework. This vulnerability allows authenticated attackers, acting as functionaries within a trusted layout, to bypass DISALLOW rules by creating attestations with path traversal semantics. The CVSS score is 6.5 (Medium), indicating a network-based attack with low complexity and high impact on integrity, but no impact on confidentiality or availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.3.0CPE matchmatch criteria
cpe:2.3:a:in-toto:in-toto-golang:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.6MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.1
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 45th percentile among its peer group of 21,977 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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/in-toto/in-toto-golangFixed in: 0.3.0

Vendor Advisories (1)

goGHSA-vrxp-mg9f-hwf3medium

Improperly Implemented path matching for in-toto-golang

Sep 22, 2021

References

github.com / in-toto/in-toto-golang/commit/f2c57d1e0f15e3ffbeac531829c696b72ecc4290
PatchThird Party Advisory
github.com / in-toto/in-toto-golang/security/advisories/GHSA-vrxp-mg9f-hwf3
Third Party Advisory