{"answers":{"affected":"It affects 1 product.","exploited":"Yes. Attackers have exploited CVE-2025-27915 in the wild since at least 7 Oct 2025.","fix":"No fix has been published for CVE-2025-27915 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 28 Oct 2025.","what":"CVE-2025-27915 is a medium-severity cross-site scripting vulnerability in Synacor Zimbra Collaboration Suite, published on 12 Mar 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2025-27915 and fix it if it is affected.\n\nWhat it is: CVE-2025-27915 is a medium-severity cross-site scripting vulnerability in Synacor Zimbra Collaboration Suite, published on 12 Mar 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: Yes. Attackers have exploited CVE-2025-27915 in the wild since at least 7 Oct 2025.\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-2025-27915/ (Markdown: https://insights.sbomify.com/CVE-2025-27915/index.md)","id":"CVE-2025-27915","markdown":"https://insights.sbomify.com/CVE-2025-27915/index.md","name":"CVE-2025-27915","record":{"aliases":["GHSA-5rg8-g76j-7fw7"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["account_takeover","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Zimbra Collaboration","requires_auth":"low_privilege","summary":"Stored XSS in Zimbra allows attackers to execute JavaScript via malicious ICS files, enabling account takeover and data exfiltration.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"zimbra_collaboration_suite","vendor":"synacor"}],"cvss":{"score":5.4,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1. A stored cross-site scripting (XSS) vulnerability exists in the Classic Web Client due to insufficient sanitization of HTML content in ICS files. When a user views an e-mail message containing a malicious ICS entry, its embedded JavaScript executes via an ontoggle event inside a \u003cdetails\u003e tag. This allows an attacker to run arbitrary JavaScript within the victim's session, potentially leading to unauthorized actions such as setting e-mail filters to redirect messages to an attacker-controlled address. As a result, an attacker can perform unauthorized actions on the victim's account, including e-mail redirection and data exfiltration.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":1,"refs":[{"date":null,"kind":"nuclei","ref":"http/cves/2025/CVE-2025-27915.yaml","stars":null,"title":"Zimbra - Cross-Site Scripting via ICS Files"}],"tier":"exploited"},"has_fix":false,"headline":"Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting","id":"CVE-2025-27915","indexable":true,"kev":{"dateAdded":"2025-10-07","dueDate":"2025-10-28","knownRansomwareCampaignUse":"Unknown","product":"Zimbra Collaboration Suite (ZCS)","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","vendorProject":"Synacor","vulnerabilityName":"Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"synacor:zimbra_collaboration_suite","products":["synacor:zimbra_collaboration_suite"],"type":"xss","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"Auth bypass in n/a","id":"CVE-2025-27916"},"packages":[],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2025-27914"},"products":["n/a"],"published":"2025-03-12","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":"attribution","licence":"MIT","name":"Nuclei templates"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-02-26","vendors":["n/a"]},"summary":"Stored XSS in Zimbra allows attackers to execute JavaScript via malicious ICS files, enabling account takeover and data exfiltration.","url":"https://insights.sbomify.com/CVE-2025-27915/"}