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CVE-2022-3993

32
FAUCET Score

CVE-2022-3993 is a critical vulnerability affecting Kavita Reader versions prior to 0.6.0.3, stemming from an improper restriction of excessive authentication attempts. This allows for unauthenticated attackers to conduct brute-force attacks, potentially leading to full compromise of confidentiality, integrity, and availability. With a CVSS score of 9.8 (CRITICAL), it is easily exploitable over the network with low attack complexity. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.6.0.3CPE matchmatch criteria
cpe:2.3:a:kavitareader:kavita:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.4CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.05%
Probability of exploitation in next 30 days
EPSS Percentile
60.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0105 is in the 46th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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 / kareadita/kavita/commit/f8db37d3f9aa42d47e7c4f4ca839e892d3f97afb
PatchThird Party Advisory
huntr.dev / bounties/bebd0cd6-18ec-469c-b6ca-19ffa9db0699
ExploitPatchThird Party Advisory