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CVE-2021-23514

25
FAUCET Score

CVE-2021-23514 is a directory traversal vulnerability affecting the Crow package before version 0.3+4, allowing attackers to fetch arbitrary files from the server. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with no user interaction, potentially leading to significant information disclosure. While no active exploitation, public exploit code, or significant community discussion has been observed, its high severity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.3\+4CPE matchmatch criteria
cpe:2.3:a:crowcpp:crow:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.59%
Probability of exploitation in next 30 days
EPSS Percentile
73.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0159 is in the 55th 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 (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / CrowCpp/Crow/pull/317
Issue TrackingPatchThird Party Advisory
github.com / CrowCpp/Crow/releases/tag/v0.3%2B4
Release NotesThird Party Advisory
snyk.io / vuln/SNYK-UNMANAGED-CROW-2336163
ExploitThird Party Advisory