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CVE-2025-22153

23
FAUCET Score

CVE-2025-22153 describes a bypass vulnerability in RestrictedPython versions prior to 8.0, stemming from a type confusion bug in CPython interpreters (3.11 to 3.13.1) when handling try/except* clauses. This flaw allows an attacker to escape the restricted Python environment. With a CVSS score of 7.9 (HIGH), successful exploitation could lead to high confidentiality and integrity impacts, and low availability impact, requiring high privileges and complex attack conditions. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
ZopefoundationRestrictedPython
>= 6.0, < 8.0CNA affected

CVSS Data

CVSS version used by this source: 3.1

7.9HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
1.3
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 40th percentile among its peer group of 81 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.4 Bluesky, 0.2 Mastodon, and 0.1 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)

pippatch availablevia ghsa
Product: RestrictedPythonFixed in: 8.0

Vendor Advisories (1)

pipGHSA-gmj9-h825-chq2high

try/except* clauses could allow bypass RestrictedPython via type confusion bug in the CPython interpreter

Jan 23, 2025

References

github.com / zopefoundation/RestrictedPython/commit/48a92c5bb617a647cffd0dadd4d5cfe626bcdb2f
github.com / zopefoundation/RestrictedPython/security/advisories/GHSA-gmj9-h825-chq2