{"answers":{"affected":"It affects 1 product.","exploited":"Yes. Attackers have exploited CVE-2026-73570 in the wild since at least 21 Aug 2026.","fix":"No fix has been published for CVE-2026-73570 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 24 Aug 2026.","what":"CVE-2026-73570 is a high-severity command injection vulnerability in Synacor Zimbra Collaboration Suite, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-73570 and fix it if it is affected.\n\nWhat it is: CVE-2026-73570 is a high-severity command injection vulnerability in Synacor Zimbra Collaboration Suite, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2026-73570 in the wild since at least 21 Aug 2026.\n\nAffected product: Synacor Zimbra Collaboration Suite. 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-2026-73570/ (Markdown: https://insights.sbomify.com/CVE-2026-73570/index.md)","id":"CVE-2026-73570","markdown":"https://insights.sbomify.com/CVE-2026-73570/index.md","name":"CVE-2026-73570","record":{"aliases":["GHSA-jqh7-pchh-v74j"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"Zimbra Collaboration","requires_auth":"none","summary":"Unauthenticated attackers can execute arbitrary OS commands via crafted SMTP requests if SNMP notifications are enabled in Zimbra Collaboration.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"zimbra_collaboration_suite","vendor":"synacor"}],"cvss":{"score":8.9,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"description":"A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installed and SNMP notifications are enabled. Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-08-21","github_poc":9,"max_poc_stars":5,"metasploit":0,"nuclei":1,"refs":[{"date":"2026-08-21T03:18:23Z","kind":"github_poc","ref":"https://github.com/HORKimhab/CVE-2026-73570","stars":5,"title":"CVE-2026-73570"},{"date":"2026-08-25T10:25:53Z","kind":"github_poc","ref":"https://github.com/jishino567/CVE-2026-73570","stars":4,"title":"PoC for CVE-2026-73570 (Zimbra SMTP Command Injection)"},{"date":"2026-08-26T03:30:14Z","kind":"github_poc","ref":"https://github.com/gabrielunknown/CVE-2026-73570","stars":4,"title":"Zimbra SNMP Notification OS Command Injection — Unauthenticated RCE via SMTP exploit (Poc)"},{"date":"2026-09-04T10:45:32Z","kind":"github_poc","ref":"https://github.com/dahnutz/zimbra-cve-2026-73570-ir","stars":2,"title":"Detection-first, evidence-preserving incident-response toolkit for Zimbra CVE-2026-73570. Includes read-only host checks, IOC feeds, triage, persistence, containment, and recovery guidance based on sanitized incident evidence."},{"date":"2026-09-30T21:13:26Z","kind":"github_poc","ref":"https://github.com/0xredash/CVE-2026-73570","stars":2,"title":"CVE-2026-73570"},{"date":"2026-08-24T11:55:28Z","kind":"github_poc","ref":"https://github.com/BiuTrap/CVE-2026-73570","stars":0,"title":"CVE-2026-73570 PoC"},{"date":"2026-08-28T10:37:44Z","kind":"github_poc","ref":"https://github.com/INFOKOM-KI/Zimbra-CVE-2026-73570-Rules","stars":0,"title":"Wazuh Rules for Detection Zimbra (CVE-2026-73570)."},{"date":"2026-09-05T22:48:51Z","kind":"github_poc","ref":"https://github.com/juanpoch/CVE-2026-73570","stars":0,"title":"Zimbra Collaboration Suite RCE — SMTP log poisoning → swatchdog → OS Command Injection (CVSS 8.9, CISA KEV)"}],"tier":"exploited"},"has_fix":false,"headline":"Zimbra Collaboration Suite (ZCS) OS Command Injection","id":"CVE-2026-73570","indexable":true,"kev":{"dateAdded":"2026-08-21","dueDate":"2026-08-24","knownRansomwareCampaignUse":"Unknown","product":"Zimbra Collaboration Suite (ZCS)","requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","vendorProject":"Synacor","vulnerabilityName":"Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"synacor:zimbra_collaboration_suite","products":["synacor:zimbra_collaboration_suite"],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Missing authorization in Collaboration","id":"CVE-2026-73571"},"packages":[],"prev":{"headline":"fast-xml-parser: Repeated DOCTYPE declarations reset entity expansion limits","id":"CVE-2026-73569"},"products":["Collaboration"],"published":"2026-08-13","related":[{"cvss_score":10,"headline":"Synacor Zimbra Collaboration Suite (ZCS) Command Execution","id":"CVE-2024-45519","kev_date_added":"2024-10-03","published":"2024-10-02"},{"cvss_score":9.8,"headline":"Synacor Zimbra Collaboration Suite (ZCS) Arbitrary File Upload","id":"CVE-2022-41352","kev_date_added":"2022-10-20","published":"2022-09-26"},{"cvss_score":9.8,"headline":"Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass","id":"CVE-2022-37042","kev_date_added":"2022-08-11","published":"2022-08-11"},{"cvss_score":9.8,"headline":"Synacor Zimbra Collaboration Suite (ZCS) Command Injection","id":"CVE-2022-27924","kev_date_added":"2022-08-04","published":"2022-04-20"},{"cvss_score":9.8,"headline":"Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery","id":"CVE-2020-7796","kev_date_added":"2026-02-17","published":"2020-02-18"},{"cvss_score":9.8,"headline":"Synacor Zimbra Collaboration Suite (ZCS) Improper Restriction of XML External Entity Reference","id":"CVE-2019-9670","kev_date_added":"2022-01-10","published":"2019-05-29"},{"cvss_score":9,"headline":"Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS)","id":"CVE-2023-34192","kev_date_added":"2025-02-25","published":"2023-07-06"}],"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":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-24","vendors":["Zimbra"]},"summary":"Unauthenticated attackers can execute arbitrary OS commands via crafted SMTP requests if SNMP notifications are enabled in Zimbra Collaboration.","url":"https://insights.sbomify.com/CVE-2026-73570/"}