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CVE-2019-9710

26
FAUCET Score

CVE-2019-9710 describes a non-thread-safe cache vulnerability in webargs versions prior to 5.1.3, impacting its use with marshmallow and other products. This flaw allows for the parsing of incorrect JSON payloads during concurrent requests due to a short-lived, un-synchronized cache. Rated 8.1 HIGH (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H), it presents a high impact on confidentiality, integrity, and availability with high attack complexity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.1.3CPE matchmatch criteria
cpe:2.3:a:webargs_project:webargs:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.12%
Probability of exploitation in next 30 days
EPSS Percentile
62.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0112 is in the 25th percentile among its peer group of 8,913 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 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)

pippatch availablevia ghsa
Product: webargsFixed in: 5.1.3

Vendor Advisories (1)

pipGHSA-8554-jxcw-454qhigh

Webargs mishandles concurrent JSON parsing

Mar 12, 2019

References

github.com / marshmallow-code/webargs/issues/371
ExploitIssue TrackingThird Party Advisory
webargs.readthedocs.io / en/latest/changelog.html
Release NotesThird Party Advisory