{"answers":{"affected":"3 open source packages ship an affected version, including twisted and Twisted.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-106454 exists.","fix":"No fix published yet.","what":"CVE-2026-106454 is a medium-severity denial of service vulnerability in twisted, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-106454 and fix it if it is affected.\n\nWhat it is: CVE-2026-106454 is a medium-severity denial of service vulnerability in twisted, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-106454 exists.\n\nAffected packages and fixed versions:\n- twisted (PyPI): affected all versions up to 25.5.0; no fix listed\n- twisted (PyPI): affected all versions up to 26.4.0; no fix listed\n- Twisted (PyPI): affected all versions up to 26.4.0; no fix listed\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-106454/ (Markdown: https://insights.sbomify.com/CVE-2026-106454/index.md)","id":"CVE-2026-106454","markdown":"https://insights.sbomify.com/CVE-2026-106454/index.md","name":"CVE-2026-106454","record":{"aliases":["AZL-106712","BELL-CVE-2026-106454","CLSA-2026-1791526134","DEBIAN-CVE-2026-106454","GHSA-8pqf-f4m5-798g","OESA-2026-4426","OESA-2026-4427","OESA-2026-4428","PYSEC-2026-4304","UBUNTU-CVE-2026-106454","openSUSE-SU-2026:12137-1"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python networking library","requires_auth":"low_privilege","summary":"An authenticated attacker can cause a denial of service in Twisted IMAP servers by sending malicious patterns that trigger catastrophic regex backtracking.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"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.","ecosystems":["PyPI","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Twisted: IMAP wildcardToRegexp() ReDoS","id":"CVE-2026-106454","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"Backstage: Improper validation of MkDocs plugin configuration in TechDocs","id":"CVE-2026-106455"},"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["26.4.0"],"package":"Twisted","purl":null,"source":"GHSA-8pqf-f4m5-798g"},{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["25.5.0"],"package":"twisted","purl":"pkg:pypi/twisted","source":"PYSEC-2026-4304"},{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["26.4.0"],"package":"twisted","purl":"pkg:pypi/twisted","source":"GHSA-8pqf-f4m5-798g"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["26.4.0-4.1"],"introduced":["0"],"last_affected":[],"package":"python-Twisted","purl":"pkg:rpm/opensuse/python-Twisted\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:12137-1"}],"prev":{"headline":"yawkat LZ4 Java: LZ4DecompressorWithLength allocates the unvalidated size from the 4-byte length header, so a 5-byte input triggers a 1 GiB allocation and OutOfMemoryError","id":"CVE-2026-106453"},"products":["twisted"],"published":"2026-10-06","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-07","vendors":["twisted"]},"summary":"An authenticated attacker can cause a denial of service in Twisted IMAP servers by sending malicious patterns that trigger catastrophic regex backtracking.","url":"https://insights.sbomify.com/CVE-2026-106454/"}