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CVE-2022-40468

25
FAUCET Score

CVE-2022-40468 is a high-severity vulnerability affecting Tinyproxy versions up to and including commit 84f203f, where uninitialized buffers in the process_request() function can lead to a potential leak of heap data. This flaw occurs if custom error page templates containing specific non-standard variables are utilized. With a CVSS score of 7.5 (High), this vulnerability can be exploited remotely over the network with low attack complexity, potentially leading to a high impact on confidentiality. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.11.1CPE matchmatch criteria
cpe:2.3:a:tinyproxy_project:tinyproxy:*:*:*:*:*:*:*:*

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:H/I:N/A:N

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

Exploit Intelligence

EPSS Score
1.47%
Probability of exploitation in next 30 days
EPSS Percentile
71.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0147 is in the 52nd percentile among its peer group of 51,455 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

Remediation records are not available for this CVE.

References

lists.debian.org / debian-lts-announce/2024/09/msg00035.html
github.com / tinyproxy/tinyproxy
Third Party Advisory
github.com / tinyproxy/tinyproxy/blob/84f203fb1c4733608c7283bbe794005a469c4b00/src/reqs.c
ExploitThird Party Advisory
github.com / tinyproxy/tinyproxy/issues/457
ExploitThird Party Advisory
github.com / tinyproxy/tinyproxy/issues/457
security.gentoo.org / glsa/202305-27