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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-25640

21
FAUCET Score

CVE-2026-25640 is a path traversal vulnerability in the Pydantic AI web UI (versions 1.34.0 to 1.50.0) that allows an unauthenticated attacker to serve arbitrary JavaScript by crafting a malicious URL. This medium-severity vulnerability (CVSS 5.4) requires user interaction (e.g., clicking a link) and could lead to theft of chat history and client-side data. While the vulnerability primarily affects applications serving chat interfaces locally, it could impact remote deployments. There is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.34.0, < 1.51.0CPE matchmatch criteria
cpe:2.3:a:pydantic:pydantic_ai:*:*:*:*:*:python:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.32%
Probability of exploitation in next 30 days
EPSS Percentile
24.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 25th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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 (5)

pippatch availablevia ghsa
Product: pydantic-aiFixed in: 1.51.0
pippatch availablevia ghsa
Product: pydantic-ai-slimFixed in: 1.51.0
github_advisoryvendor investigatingvia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux AI (RHEL AI) 3Fixed in: rhelai3/bootc-cuda-rhel9
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux AI (RHEL AI) 3Fixed in: rhelai3/disk-image-cuda-rhel9

Vendor Advisories (2)

redhatCVE-2026-25640Important

Pydantic AI: Pydantic AI: Arbitrary code execution and information disclosure via path traversal in web UI

Feb 6, 2026
pipGHSA-wjp5-868j-wqv7high

Pydantic AI has Stored XSS via Path Traversal in Web UI CDN URL

Feb 6, 2026

References

access.redhat.com / security/cve/CVE-2026-25640
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-25640.json
github.com / pydantic/pydantic-ai/releases/tag/v1.51.0
ProductRelease Notes
github.com / pydantic/pydantic-ai/security/advisories/GHSA-wjp5-868j-wqv7
Vendor Advisory