CVE-2026-106454

CVE Enrichment

CVSS: 4.3 MEDIUM
EPSS: 0.33%
EPSS Percentile: 24.48%
CISA KEV: Not listed

Description

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: security-advisories@github.com
Published: 07-Oct-2026 03:17
Last Modified: 08-Oct-2026 00:16
EPSS Date: 2026-10-14
CWE: CWE-1333

CVSS Vector


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

References

Last enrichment sync: 14-Oct-2026 22:15
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

CVE-2026-106454 Microsoft October 2026 Updates Fix 1,411 Flaws, Including Three Zero-Days

CVE (1235)

People (2)

MITRE ATT&CK (1)

Vendors (14)

Products (87)

Tools (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.