CVE-2026-55830

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Source
https://cve.org/CVERecord?id=CVE-2026-55830
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55830.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55830
Aliases
Downstream
CGA (4)
CLEANSTART (1)
DEBIAN (1)
ECHO (1)
MINI (7)
UBUNTU (1)
Published
2026-07-08T21:16:36Z
Modified
2026-11-11T10:47:34Z
Severity
  • 8.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L CVSS Calculator
Summary
RestrictedPython guard hooks can be shadowed via positional-only arguments
Details

RestrictedPython is a tool that helps to define a subset of the Python language which allows to provide a program input into a trusted environment. Prior to 8.3, check_function_argument_names() rejected protected guard hook names for regular, variadic, and keyword-only arguments but omitted positional-only arguments, allowing getattr, getitem, write, or print to be shadowed by a local parameter and bypass the embedding application's access policy. This issue is fixed in version 8.3.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-184"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55830.json"
}
References

Affected packages

Git / github.com/zopefoundation/restrictedpython

Affected ranges

Type
GIT
Repo
https://github.com/zopefoundation/restrictedpython
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c2250bd73d32fae583dcdd2c5dcf2b4c0fd269dc
Fixed
3737596ec9f28c34a073cc845bd2f4c0a80cb671
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "8.3"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "3737596ec9f28c34a073cc845bd2f4c0a80cb671"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

4.*
4.0
4.0a1
4.0a2
4.0a3
4.0b1
4.0b2
4.0b3
4.0b4
4.0b5
4.0b6
4.0b7
4.0b8
5.*
5.0
5.1
5.2
5.2a1.dev0
5.3a1.dev0
6.*
6.0
6.0a1.dev0
7.*
7.0
7.0a1.dev0
7.0a1.dev1
7.0a2.dev0
7.1
7.2
7.2a1.dev0
7.3
7.4
8.*
8.0
8.1
8.1a1.dev0
8.2
8.3a1.dev0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55830.json"