CVE-2026-106454

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Source

https://cve.org/CVERecord?id=CVE-2026-106454

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106454.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-106454

Aliases

GHSA-8pqf-f4m5-798g

Downstream

Published

2026-10-06T19:55:36Z

Modified

2026-10-07T10:46:59Z

Severity

4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator

Summary

Twisted: IMAP wildcardToRegexp() ReDoS

Details

Twisted is an event-based framework for internet applications, supporting Python 3.6+. In 25.5.0 and earlier, wildcardToRegexp() in twisted/mail/imap4.py translates the IMAP asterisk and percent wildcards but passes all other characters from an authenticated client's LIST or LSUB pattern directly to re.compile(), allowing nested or otherwise expensive regular expression constructs to cause catastrophic backtracking when matched against mailbox names. Because Twisted uses a cooperative single-threaded reactor, the blocking match suspends all server input and output for the duration of the match. No fixed release is available as of this review.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1333"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106454.json"
}

References

Affected packages

Git / github.com/twisted/twisted

Affected ranges

Type

GIT

Repo

https://github.com/twisted/twisted

Events

Introduced

Last Affected

932f2f8d3861e9d1d7145b917747f4a29801337e

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "25.5.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

Other

before-black

twisted-25.*

twisted-25.5.0

twisted-25.5.0rc1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-106454.json"