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CVE-2023-34457

19
FAUCET Score

CVE-2023-34457 is a high-severity vulnerability affecting MechanicalSoup versions 0.2.0 through 1.2.0, a Python library for web automation. A malicious web server can exploit this flaw to read arbitrary files from the client system by embedding a specially crafted file input field within an HTML form. The vulnerability has a CVSS score of 7.5, indicating a high risk due to its network-based attack vector and low attack complexity, potentially leading to significant information disclosure (C:H). There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.0CPE matchmatch criteria
cpe:2.3:a:mechanicalsoup_project:mechanicalsoup:*:*:*:*:*:python:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.08%
Probability of exploitation in next 30 days
EPSS Percentile
61.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0108 is in the 39th percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

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
pippatch availablevia ghsa
Product: MechanicalSoupFixed in: 1.3.0

Vendor Advisories (1)

pipGHSA-x456-3ccm-m6j4high

MechanicalSoup vulnerable to malicious web server reading arbitrary files on client using file input inside HTML form

Jul 5, 2023

References

github.com / MechanicalSoup/MechanicalSoup/commit/d57c4a269bba3b9a0c5bfa20292955b849006d9e
Patch
github.com / MechanicalSoup/MechanicalSoup/releases/tag/v1.3.0
Release Notes
github.com / MechanicalSoup/MechanicalSoup/security/advisories/GHSA-x456-3ccm-m6j4
ExploitPatchVendor Advisory
security.netapp.com / advisory/ntap-20230803-0005