{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-24055 exists.","fix":"No fix has been published for CVE-2026-24055 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-24055 is a medium-severity missing authorization vulnerability in langfuse, published on 22 Jan 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-2026-24055 and fix it if it is affected.\n\nWhat it is: CVE-2026-24055 is a medium-severity missing authorization vulnerability in langfuse, published on 22 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-24055 exists.\n\nAffected product: langfuse. 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-2026-24055/ (Markdown: https://insights.sbomify.com/CVE-2026-24055/index.md)","id":"CVE-2026-24055","markdown":"https://insights.sbomify.com/CVE-2026-24055/index.md","name":"CVE-2026-24055","record":{"aliases":["GHSA-pvq7-vvfj-p98x"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"LLM engineering platform","requires_auth":"none","summary":"Unauthenticated attackers can link arbitrary Slack workspaces to Langfuse projects, enabling unauthorized access to or modification of prompt management integrations.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"langfuse","vendor":"langfuse"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"},{"id":"CWE-284","name":"Improper Access Control"}],"description":"Langfuse is an open source large language model engineering platform. In versions 3.146.0 and below, the /api/public/slack/install endpoint initiates Slack OAuth using a projectId provided by the client without authentication or authorization. The projectId is preserved throughout the OAuth flow, and the callback stores installations based on this untrusted metadata. This allows an attacker to bind their Slack workspace to any project and potentially receive changes to prompts stored in Langfuse Prompt Management. An attacker can replace existing Prompt Slack Automation integrations or pre-register a malicious one, though the latter requires an authenticated user to unknowingly configure it despite visible workspace and channel indicators in the UI. This issue has been fixed in version 3.147.0.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-05-14","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-05-14T03:59:23Z","kind":"github_poc","ref":"https://github.com/imzanggg/CVE-2026-24055-OAuth-Langfuse","stars":0,"title":"Reproduction and patch verification of CVE-2026-24055 (CWE-284) - an unauthenticated OAuth access control vulnerability in Langfuse allowing Slack workspace hijacking. Coursework for Web \u0026 Application Security."}],"tier":"weaponised"},"has_fix":false,"headline":"Langfuse Slack OAuth Installation Endpoint Lacks Authentication, Enabling Arbitrary Project Linking","id":"CVE-2026-24055","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"pnpm has symlink traversal in file:/git dependencies","id":"CVE-2026-24056"},"packages":[],"prev":{"headline":"Other in kata-containers","id":"CVE-2026-24054"},"products":["langfuse"],"published":"2026-01-22","related":[{"cvss_score":7.6,"headline":"Missing authorization in n/a","id":"CVE-2025-59305","kev_date_added":null,"published":"2025-09-24"},{"cvss_score":6.5,"headline":"Langfuse SSO Account Takeover via CSRF or phishing attack","id":"CVE-2025-65107","kev_date_added":null,"published":"2025-11-21"},{"cvss_score":5.3,"headline":"Missing authorization in langfuse","id":"CVE-2026-41487","kev_date_added":null,"published":"2026-05-08"},{"cvss_score":5,"headline":"Langfuse vulnerable to cross‑organization enumeration of member \u0026 invitation lists via project membership APIs","id":"CVE-2025-64504","kev_date_added":null,"published":"2025-11-10"},{"cvss_score":2.3,"headline":"Langfuse Webhook promptRouter.ts promptChangeEventSourcing server-side request forgery","id":"CVE-2025-9799","kev_date_added":null,"published":"2025-09-01"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-22","vendors":["langfuse"]},"summary":"Unauthenticated attackers can link arbitrary Slack workspaces to Langfuse projects, enabling unauthorized access to or modification of prompt management integrations.","url":"https://insights.sbomify.com/CVE-2026-24055/"}