CVE catalog
CVE-2026-106454
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 wildc
- Severity
- Medium · CVSS 4.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.42% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | twisted | sid | 26.4.0-6 | fixed |
| Debian | twisted | forky | 26.4.0-6 | fixed |
| Debian | twisted | trixie | 24.11.0-1 | vulnerable |
| Debian | twisted | bookworm | 22.4.0-4+deb12u1 | vulnerable |
| Debian | twisted | bookworm-security | 22.4.0-4+deb12u1 | vulnerable |
| PyPI | twisted | Not reported | 1.0.1 | vulnerable |
| PyPI | twisted | Not reported | 1.0.3 | vulnerable |
| PyPI | twisted | Not reported | 1.0.4 | vulnerable |
| PyPI | twisted | Not reported | 1.0.5 | vulnerable |
| PyPI | twisted | Not reported | 1.0.6 | vulnerable |
| PyPI | twisted | Not reported | 1.0.7 | vulnerable |
| PyPI | twisted | Not reported | 1.1.0 | vulnerable |
| PyPI | twisted | Not reported | 1.1.1 | vulnerable |
| PyPI | twisted | Not reported | 1.2.0 | vulnerable |
| PyPI | twisted | Not reported | 10.0.0 | vulnerable |
| PyPI | twisted | Not reported | 10.1.0 | vulnerable |
| PyPI | twisted | Not reported | 10.2.0 | vulnerable |
| PyPI | twisted | Not reported | 11.0.0 | vulnerable |
| PyPI | twisted | Not reported | 11.1.0 | vulnerable |
| PyPI | twisted | Not reported | 12.0.0 | vulnerable |
| PyPI | twisted | Not reported | 12.1.0 | vulnerable |
| PyPI | twisted | Not reported | 12.2.0 | vulnerable |
| PyPI | twisted | Not reported | 12.3.0 | vulnerable |
| PyPI | twisted | Not reported | 13.0.0 | vulnerable |
| PyPI | twisted | Not reported | 13.1.0 | vulnerable |
| PyPI | twisted | Not reported | 13.2.0 | vulnerable |
| PyPI | twisted | Not reported | 14.0.0 | vulnerable |
| PyPI | twisted | Not reported | 14.0.1 | vulnerable |
| PyPI | twisted | Not reported | 14.0.2 | vulnerable |
| PyPI | twisted | Not reported | 15.0.0 | vulnerable |
| PyPI | twisted | Not reported | 15.1.0 | vulnerable |
| PyPI | twisted | Not reported | 15.2.0 | vulnerable |
| PyPI | twisted | Not reported | 15.2.1 | vulnerable |
| PyPI | twisted | Not reported | 15.3.0 | vulnerable |
| PyPI | twisted | Not reported | 15.4.0 | vulnerable |
| PyPI | twisted | Not reported | 15.5.0 | vulnerable |
| PyPI | twisted | Not reported | 16.0.0 | vulnerable |
| PyPI | twisted | Not reported | 16.1.0 | vulnerable |
| PyPI | twisted | Not reported | 16.1.1 | vulnerable |
| PyPI | twisted | Not reported | 16.2.0 | vulnerable |
| PyPI | twisted | Not reported | 16.3.0 | vulnerable |
| PyPI | twisted | Not reported | 16.3.1 | vulnerable |
| PyPI | twisted | Not reported | 16.3.2 | vulnerable |
| PyPI | twisted | Not reported | 16.4.0 | vulnerable |
| PyPI | twisted | Not reported | 16.4.1 | vulnerable |
| PyPI | twisted | Not reported | 16.5.0 | vulnerable |
| PyPI | twisted | Not reported | 16.5.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 16.5.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 16.6.0 | vulnerable |
| PyPI | twisted | Not reported | 16.6.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 16.7.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 16.7.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 17.1.0 | vulnerable |
| PyPI | twisted | Not reported | 17.1.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 17.5.0 | vulnerable |
| PyPI | twisted | Not reported | 17.9.0 | vulnerable |
| PyPI | twisted | Not reported | 17.9.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 18.4.0 | vulnerable |
| PyPI | twisted | Not reported | 18.4.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 18.7.0 | vulnerable |
| PyPI | twisted | Not reported | 18.7.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 18.7.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 18.9.0 | vulnerable |
| PyPI | twisted | Not reported | 18.9.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 19.10.0 | vulnerable |
| PyPI | twisted | Not reported | 19.10.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 19.2.0 | vulnerable |
| PyPI | twisted | Not reported | 19.2.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 19.2.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 19.2.1 | vulnerable |
| PyPI | twisted | Not reported | 19.7.0 | vulnerable |
| PyPI | twisted | Not reported | 19.7.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 2.1.0 | vulnerable |
| PyPI | twisted | Not reported | 2.4.0 | vulnerable |
| PyPI | twisted | Not reported | 2.5.0 | vulnerable |
| PyPI | twisted | Not reported | 20.3.0 | vulnerable |
| PyPI | twisted | Not reported | 20.3.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 21.2.0 | vulnerable |
| PyPI | twisted | Not reported | 21.2.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 21.7.0 | vulnerable |
| PyPI | twisted | Not reported | 21.7.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 21.7.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 21.7.0rc3 | vulnerable |
| PyPI | twisted | Not reported | 22.1.0 | vulnerable |
| PyPI | twisted | Not reported | 22.1.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 22.10.0 | vulnerable |
| PyPI | twisted | Not reported | 22.10.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 22.2.0 | vulnerable |
| PyPI | twisted | Not reported | 22.2.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 22.4.0 | vulnerable |
| PyPI | twisted | Not reported | 22.4.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 22.8.0 | vulnerable |
| PyPI | twisted | Not reported | 22.8.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 23.10.0 | vulnerable |
| PyPI | twisted | Not reported | 23.10.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 23.8.0 | vulnerable |
| PyPI | twisted | Not reported | 23.8.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 24.10.0 | vulnerable |
| PyPI | twisted | Not reported | 24.10.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 24.11.0 | vulnerable |
| PyPI | twisted | Not reported | 24.11.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 24.11.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 24.2.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 24.3.0 | vulnerable |
| PyPI | twisted | Not reported | 24.7.0 | vulnerable |
| PyPI | twisted | Not reported | 24.7.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 24.7.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 25.5.0 | vulnerable |
| PyPI | twisted | Not reported | 25.5.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 8.0.0 | vulnerable |
| PyPI | twisted | Not reported | 8.0.1 | vulnerable |
| PyPI | twisted | Not reported | 8.1.0 | vulnerable |
| PyPI | twisted | Not reported | 8.2.0 | vulnerable |
| PyPI | twisted | Not reported | 9.0.0 | vulnerable |
| PyPI | twisted | Not reported | 1.0.1 | vulnerable |
| PyPI | twisted | Not reported | 1.0.3 | vulnerable |
| PyPI | twisted | Not reported | 1.0.4 | vulnerable |
| PyPI | twisted | Not reported | 1.0.5 | vulnerable |
| PyPI | twisted | Not reported | 1.0.6 | vulnerable |
| PyPI | twisted | Not reported | 1.0.7 | vulnerable |
| PyPI | twisted | Not reported | 1.1.0 | vulnerable |
| PyPI | twisted | Not reported | 1.1.1 | vulnerable |
| PyPI | twisted | Not reported | 1.2.0 | vulnerable |
| PyPI | twisted | Not reported | 10.0.0 | vulnerable |
| PyPI | twisted | Not reported | 10.1.0 | vulnerable |
| PyPI | twisted | Not reported | 10.2.0 | vulnerable |
| PyPI | twisted | Not reported | 11.0.0 | vulnerable |
| PyPI | twisted | Not reported | 11.1.0 | vulnerable |
| PyPI | twisted | Not reported | 12.0.0 | vulnerable |
| PyPI | twisted | Not reported | 12.1.0 | vulnerable |
| PyPI | twisted | Not reported | 12.2.0 | vulnerable |
| PyPI | twisted | Not reported | 12.3.0 | vulnerable |
| PyPI | twisted | Not reported | 13.0.0 | vulnerable |
| PyPI | twisted | Not reported | 13.1.0 | vulnerable |
| PyPI | twisted | Not reported | 13.2.0 | vulnerable |
| PyPI | twisted | Not reported | 14.0.0 | vulnerable |
| PyPI | twisted | Not reported | 14.0.1 | vulnerable |
| PyPI | twisted | Not reported | 14.0.2 | vulnerable |
| PyPI | twisted | Not reported | 15.0.0 | vulnerable |
| PyPI | twisted | Not reported | 15.1.0 | vulnerable |
| PyPI | twisted | Not reported | 15.2.0 | vulnerable |
| PyPI | twisted | Not reported | 15.2.1 | vulnerable |
| PyPI | twisted | Not reported | 15.3.0 | vulnerable |
| PyPI | twisted | Not reported | 15.4.0 | vulnerable |
| PyPI | twisted | Not reported | 15.5.0 | vulnerable |
| PyPI | twisted | Not reported | 16.0.0 | vulnerable |
| PyPI | twisted | Not reported | 16.1.0 | vulnerable |
| PyPI | twisted | Not reported | 16.1.1 | vulnerable |
| PyPI | twisted | Not reported | 16.2.0 | vulnerable |
| PyPI | twisted | Not reported | 16.3.0 | vulnerable |
| PyPI | twisted | Not reported | 16.3.1 | vulnerable |
| PyPI | twisted | Not reported | 16.3.2 | vulnerable |
| PyPI | twisted | Not reported | 16.4.0 | vulnerable |
| PyPI | twisted | Not reported | 16.4.1 | vulnerable |
| PyPI | twisted | Not reported | 16.5.0 | vulnerable |
| PyPI | twisted | Not reported | 16.5.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 16.5.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 16.6.0 | vulnerable |
| PyPI | twisted | Not reported | 16.6.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 16.7.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 16.7.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 17.1.0 | vulnerable |
| PyPI | twisted | Not reported | 17.1.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 17.5.0 | vulnerable |
| PyPI | twisted | Not reported | 17.9.0 | vulnerable |
| PyPI | twisted | Not reported | 17.9.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 18.4.0 | vulnerable |
| PyPI | twisted | Not reported | 18.4.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 18.7.0 | vulnerable |
| PyPI | twisted | Not reported | 18.7.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 18.7.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 18.9.0 | vulnerable |
| PyPI | twisted | Not reported | 18.9.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 19.10.0 | vulnerable |
| PyPI | twisted | Not reported | 19.10.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 19.2.0 | vulnerable |
| PyPI | twisted | Not reported | 19.2.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 19.2.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 19.2.1 | vulnerable |
| PyPI | twisted | Not reported | 19.7.0 | vulnerable |
| PyPI | twisted | Not reported | 19.7.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 2.1.0 | vulnerable |
| PyPI | twisted | Not reported | 2.4.0 | vulnerable |
| PyPI | twisted | Not reported | 2.5.0 | vulnerable |
| PyPI | twisted | Not reported | 20.3.0 | vulnerable |
| PyPI | twisted | Not reported | 20.3.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 21.2.0 | vulnerable |
| PyPI | twisted | Not reported | 21.2.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 21.7.0 | vulnerable |
| PyPI | twisted | Not reported | 21.7.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 21.7.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 21.7.0rc3 | vulnerable |
| PyPI | twisted | Not reported | 22.1.0 | vulnerable |
| PyPI | twisted | Not reported | 22.1.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 22.10.0 | vulnerable |
| PyPI | twisted | Not reported | 22.10.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 22.2.0 | vulnerable |
| PyPI | twisted | Not reported | 22.2.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 22.4.0 | vulnerable |
| PyPI | twisted | Not reported | 22.4.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 22.8.0 | vulnerable |
| PyPI | twisted | Not reported | 22.8.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 23.10.0 | vulnerable |
| PyPI | twisted | Not reported | 23.10.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 23.8.0 | vulnerable |
| PyPI | twisted | Not reported | 23.8.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 24.10.0 | vulnerable |
| PyPI | twisted | Not reported | 24.10.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 24.11.0 | vulnerable |
| PyPI | twisted | Not reported | 24.11.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 24.11.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 24.2.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 24.3.0 | vulnerable |
| PyPI | twisted | Not reported | 24.7.0 | vulnerable |
| PyPI | twisted | Not reported | 24.7.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 24.7.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 25.5.0 | vulnerable |
| PyPI | twisted | Not reported | 25.5.0rc1 | vulnerable |
| PyPI | twisted | Not reported | 26.4.0 | vulnerable |
| PyPI | twisted | Not reported | 26.4.0rc2 | vulnerable |
| PyPI | twisted | Not reported | 8.0.0 | vulnerable |
| PyPI | twisted | Not reported | 8.0.1 | vulnerable |
| PyPI | twisted | Not reported | 8.1.0 | vulnerable |
| PyPI | twisted | Not reported | 8.2.0 | vulnerable |
| PyPI | twisted | Not reported | 9.0.0 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | twisted | source | sid | 26.4.0-5 | not yet assigned | Not reported | [1150248] |
| Debian | twisted | source | forky | 26.4.0-5 | not yet assigned | Not reported | [1150248] |
| Debian | twisted | source | trixie | (unfixed) | not yet assigned | Not reported | [1150248] |
| Debian | twisted | source | bookworm | (unfixed) | not yet assigned | Not reported | [1150248] |
Notes
[trixie] twisted: Minor issue [bookworm] twisted: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-twisted]Affected
Source package: [twisted]
Details (4)
22.4.0-4+deb12u1· all · bookwormAffected
nvd · twisted · debian · bookworm; nvd · twisted · debian · 12
22.4.0-4+deb12u1· all · bookwormAffected
nvd · twisted · debian · bookworm; nvd · twisted · debian · 12
22.4.0-4+deb12u1· all · bookworm-securityAffected
nvd · twisted · debian · bookworm; nvd · twisted · debian · 12
22.4.0-4+deb12u1· all · bookworm-securityAffected
nvd · twisted · debian · bookworm; nvd · twisted · debian · 12
- [twisted-doc]Affected
Source package: [twisted]
Details (4)
22.4.0-4+deb12u1· all · bookwormAffected
nvd · twisted · debian · bookworm; nvd · twisted · debian · 12
22.4.0-4+deb12u1· all · bookwormAffected
nvd · twisted · debian · bookworm; nvd · twisted · debian · 12
22.4.0-4+deb12u1· all · bookworm-securityAffected
nvd · twisted · debian · bookworm; nvd · twisted · debian · 12
22.4.0-4+deb12u1· all · bookworm-securityAffected
nvd · twisted · debian · bookworm; nvd · twisted · debian · 12
[Debian 13 (Trixie)]
- [python3-twisted]Affected
Source package: [twisted]
Details (2)
24.11.0-1· all · trixieAffected
nvd · twisted · debian · 13
24.11.0-1· all · trixieAffected
nvd · twisted · debian · 13
- [twisted-doc]Affected
Source package: [twisted]
Details (2)
24.11.0-1· all · trixieAffected
nvd · twisted · debian · 13
24.11.0-1· all · trixieAffected
nvd · twisted · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_12137-1.json]
- [https://github.com/advisories/GHSA-8pqf-f4m5-798g]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-106454]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-106454]
- [https://osv.dev/vulnerability/PYSEC-2026-4304]
- [https://security-tracker.debian.org/tracker/CVE-2026-106454]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106454.json]
[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]