{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-26490 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-26490 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-26490 is a high-severity command injection vulnerability in mailcow-dockerized, published on 3 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-26490 and fix it if it is affected.\n\nWhat it is: CVE-2023-26490 is a high-severity command injection vulnerability in mailcow-dockerized, published on 3 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-26490 in the wild and no public exploit code.\n\nAffected product: mailcow-dockerized. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2023-26490/ (Markdown: https://insights.sbomify.com/CVE-2023-26490/index.md)","id":"CVE-2023-26490","markdown":"https://insights.sbomify.com/CVE-2023-26490/index.md","name":"CVE-2023-26490","record":{"aliases":["GHSA-3j2f-wf52-cjg7"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":true,"product_category":"mailcow email server","requires_auth":"none","summary":"A malicious user with Sync Job permissions can execute arbitrary shell commands in the Dovecot container via imapsync XOAUTH2 handling.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"mailcow\\","vendor":"mailcow"}],"cvss":{"score":7.3,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"description":"mailcow is a dockerized email package, with multiple containers linked in one bridged network. The Sync Job feature - which can be made available to standard users by assigning them the necessary permission - suffers from a shell command injection. A malicious user can abuse this vulnerability to obtain shell access to the Docker container running dovecot. The imapsync Perl script implements all the necessary functionality for this feature, including the XOAUTH2 authentication mechanism. This code path creates a shell command to call openssl. However, since different parts of the specified user password are included without any validation, one can simply execute additional shell commands. Notably, the default ACL for a newly-created mailcow account does not include the necessary permission. The Issue has been fixed within the 2023-03 Update (March 3rd 2023). As a temporary workaround the Syncjob ACL can be removed from all mailbox users, preventing from creating or changing existing Syncjobs.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"mailcow is vulnerable to shell command injection via xoauth2 authentication in imapsync​","id":"CVE-2023-26490","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2023"},"n_packages":0,"n_references":2,"next":{"headline":"RSSHub is vulnerable to cross-site scripting (XSS) via unvalidated URL parameters","id":"CVE-2023-26491"},"packages":[],"prev":{"headline":"Guest-controlled out-of-bounds read/write on x86_64 in wasmtime","id":"CVE-2023-26489"},"products":["mailcow-dockerized"],"published":"2023-03-03","related":[{"cvss_score":9.1,"headline":"mailcow: dockerized vulnerable to SSTI in Quota and Quarantine Notification Template","id":"CVE-2025-53909","kev_date_added":null,"published":"2025-07-17"},{"cvss_score":8.8,"headline":"Mailcow Docker Container Exposure to Local Network","id":"CVE-2024-24760","kev_date_added":null,"published":"2024-02-02"},{"cvss_score":8.8,"headline":"Manipulation of Internal Dovecot Variables in mailcow via crafted Passwords","id":"CVE-2023-34108","kev_date_added":null,"published":"2023-06-07"},{"cvss_score":8.8,"headline":"OS Command Injection in mailcow","id":"CVE-2022-31138","kev_date_added":null,"published":"2022-07-11"},{"cvss_score":8.8,"headline":"Command injection in n/a","id":"CVE-2022-31245","kev_date_added":null,"published":"2022-05-20"},{"cvss_score":8.8,"headline":"Cross-site request forgery in n/a","id":"CVE-2017-8928","kev_date_added":null,"published":"2017-05-14"},{"cvss_score":8.3,"headline":"mailcow-dockerized XSS Vulnerability in Quarantine UI Allows Unauthorized Access and Data Manipulation","id":"CVE-2023-49077","kev_date_added":null,"published":"2023-11-30"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-02-25","vendors":["mailcow"]},"summary":"A malicious user with Sync Job permissions can execute arbitrary shell commands in the Dovecot container via imapsync XOAUTH2 handling.","url":"https://insights.sbomify.com/CVE-2023-26490/"}