{"answers":{"affected":"13 open source packages ship an affected version, including github.com/mattermost/mattermost-server, mattermost and github.com/mattermost/mattermost-server/v6. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-1777 in the wild and no public exploit code.","fix":"Upgrade github.com/mattermost/mattermost-server to a fixed version for your release line: 1.4.1-0.20230301145909-10be118d99a5, 7.1.6, 7.7.2 or 7.8.1.","what":"CVE-2023-1777 is a medium-severity vulnerability in Mattermost Mattermost Server, published on 31 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-1777 and fix it if it is affected.\n\nWhat it is: CVE-2023-1777 is a medium-severity vulnerability in Mattermost Mattermost Server, published on 31 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-1777 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/mattermost/mattermost-server (Go): affected from 1.4.1-0.20211025164829-f7a8147b825c; fixed in 1.4.1-0.20230301145909-10be118d99a5\n- github.com/mattermost/mattermost-server (Go): affected from 1.4.1-0.20211025164829-f7a8147b825c; fixed in 1.4.1-0.20230301145909-10be118d99a5\n- github.com/mattermost/mattermost-server (Go): affected from 7.1.0; fixed in 7.1.6\n- github.com/mattermost/mattermost-server (Go): affected from 7.1.0; fixed in 7.1.6\n- github.com/mattermost/mattermost-server (Go): affected from 7.7.0; fixed in 7.7.2\n- github.com/mattermost/mattermost-server (Go): affected from 7.7.0; fixed in 7.7.2\n- github.com/mattermost/mattermost-server (Go): affected from 7.8.0; fixed in 7.8.1\n- github.com/mattermost/mattermost-server (Go): affected from 7.8.0; fixed in 7.8.1\n- mattermost (Bitnami): affected all versions up to 7.7.1; fixed in 7.1.6\n- github.com/mattermost/mattermost-server/v6 (Go): affected from 6.0.0-20211025164829-f7a8147b825c; fixed in 6.0.0-20230301145909-10be118d99a5\n- github.com/mattermost/mattermost-server/v6 (Go): affected from 6.0.0-20211025164829-f7a8147b825c; fixed in 6.0.0-20230301145909-10be118d99a5\n- github.com/mattermost/mattermost-server/v6 (Go): affected from 6.3.0; fixed in 7.1.6\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-2023-1777/ (Markdown: https://insights.sbomify.com/CVE-2023-1777/index.md)","id":"CVE-2023-1777","markdown":"https://insights.sbomify.com/CVE-2023-1777/index.md","name":"CVE-2023-1777","record":{"aliases":["BIT-mattermost-2023-1777","GHSA-3wq5-3f56-v5xc"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Mattermost chat platform","requires_auth":"low_privilege","summary":"Attackers can disclose contents of linked messages by requesting previews via the createPost API, exposing sensitive chat data.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mattermost","cpe":[{"product":"mattermost_server","vendor":"mattermost"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-668","name":"Exposure of Resource to Wrong Sphere"},{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"Mattermost allows an attacker to request a preview of an existing message when creating a new message via the createPost API call, disclosing the contents of the linked message.","ecosystems":["Bitnami","Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Information disclosure in linked message previews","id":"CVE-2023-1777","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"mattermost:mattermost_server","products":["mattermost:mattermost_server"],"type":"information_disclosure","year":"2023"},"n_packages":13,"n_references":1,"next":{"headline":"Default Credential Vulnerability in GajShield Data Security Firewall","id":"CVE-2023-1778"},"packages":[{"ecosystem":"Bitnami","fixed":["7.1.6"],"introduced":["0","7.7.1","7.8.0"],"last_affected":["7.7.1","7.8.0"],"package":"mattermost","purl":"pkg:bitnami/mattermost","source":"BIT-mattermost-2023-1777"},{"ecosystem":"Go","fixed":["1.4.1-0.20230301145909-10be118d99a5"],"introduced":["1.4.1-0.20211025164829-f7a8147b825c"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-3wq5-3f56-v5xc"},{"ecosystem":"Go","fixed":["1.4.1-0.20230301145909-10be118d99a5"],"introduced":["1.4.1-0.20211025164829-f7a8147b825c"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-3wq5-3f56-v5xc"},{"ecosystem":"Go","fixed":["7.1.6"],"introduced":["7.1.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-3wq5-3f56-v5xc"},{"ecosystem":"Go","fixed":["7.1.6"],"introduced":["7.1.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-3wq5-3f56-v5xc"},{"ecosystem":"Go","fixed":["7.7.2"],"introduced":["7.7.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-3wq5-3f56-v5xc"},{"ecosystem":"Go","fixed":["7.7.2"],"introduced":["7.7.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-3wq5-3f56-v5xc"},{"ecosystem":"Go","fixed":["7.8.1"],"introduced":["7.8.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":null,"source":"GHSA-3wq5-3f56-v5xc"},{"ecosystem":"Go","fixed":["7.8.1"],"introduced":["7.8.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","source":"GHSA-3wq5-3f56-v5xc"},{"ecosystem":"Go","fixed":["6.0.0-20230301145909-10be118d99a5"],"introduced":["6.0.0-20211025164829-f7a8147b825c"],"last_affected":[],"package":"github.com/mattermost/mattermost-server/v6","purl":null,"source":"GHSA-3wq5-3f56-v5xc"},{"ecosystem":"Go","fixed":["6.0.0-20230301145909-10be118d99a5"],"introduced":["6.0.0-20211025164829-f7a8147b825c"],"last_affected":[],"package":"github.com/mattermost/mattermost-server/v6","purl":"pkg:golang/github.com/mattermost/mattermost-server/v6","source":"GHSA-3wq5-3f56-v5xc"},{"ecosystem":"Go","fixed":["7.1.6"],"introduced":["6.3.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server/v6","purl":null,"source":"GHSA-3wq5-3f56-v5xc"},{"ecosystem":"Go","fixed":["7.1.6"],"introduced":["6.3.0"],"last_affected":[],"package":"github.com/mattermost/mattermost-server/v6","purl":"pkg:golang/github.com/mattermost/mattermost-server/v6","source":"GHSA-3wq5-3f56-v5xc"}],"prev":{"headline":"Stored XSS via SVG attachment on Boards","id":"CVE-2023-1776"},"products":["Mattermost"],"published":"2023-03-31","related":[{"cvss_score":9.9,"headline":"Account takeover on OAuth/OpenID-enabled servers","id":"CVE-2025-12419","kev_date_added":null,"published":"2025-11-27"},{"cvss_score":9.9,"headline":"Account Takeover via Code Exchange Endpoint","id":"CVE-2025-12421","kev_date_added":null,"published":"2025-11-27"},{"cvss_score":9.9,"headline":"Path Traversal Leading to RCE by Any Authenticated Mattermost User","id":"CVE-2025-4981","kev_date_added":null,"published":"2025-06-20"},{"cvss_score":9.9,"headline":"Arbitrary file read via block duplication in Mattermost Boards","id":"CVE-2025-20051","kev_date_added":null,"published":"2025-02-24"},{"cvss_score":9.9,"headline":"Arbitrary file read in Mattermost Boards via import \u0026 export board archive","id":"CVE-2025-25279","kev_date_added":null,"published":"2025-02-24"},{"cvss_score":9.8,"headline":"Mattermost Server: Insufficient Password-Reset Link Invalidation","id":"CVE-2016-11074","kev_date_added":null,"published":"2020-06-19"},{"cvss_score":9.8,"headline":"Mattermost Server allows attackers to gain privileges by accessing unintended API endpoints with users' credentials","id":"CVE-2017-18885","kev_date_added":null,"published":"2020-06-19"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-12-06","vendors":["Mattermost"]},"summary":"Attackers can disclose contents of linked messages by requesting previews via the createPost API, exposing sensitive chat data.","url":"https://insights.sbomify.com/CVE-2023-1777/"}