CVE Explorer
CVE-2026-24055
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
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"langfuse","vendor":"langfuse","versions":[{"status":"affected","version":">= 3.89.0, < 3.147.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:2658c1726d9f82a7a5692d6e237f7a9ae3e9a17827bc3052fff4f3d525b756ec · sha256:50e1596ae8bb7431… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"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","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:2658c1726d9f82a7a5692d6e237f7a9ae3e9a17827bc3052fff4f3d525b756ec · sha256:50e1596ae8bb7431… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:2658c1726d9f82a7a5692d6e237f7a9ae3e9a17827bc3052fff4f3d525b756ec · sha256:50e1596ae8bb7431… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/langfuse/langfuse/commit/3adc89e4d72729eabef55e46888b8ce80a7e3b0a","tags":["x_refsource_MISC"],"url":"https://github.com/langfuse/langfuse/commit/3adc89e4d72729eabef55e46888b8ce80a7e3b0a"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2658c1726d9f82a7a5692d6e237f7a9ae3e9a17827bc3052fff4f3d525b756ec · sha256:50e1596ae8bb7431… · /containers/cna/references/1
{"name":"https://github.com/langfuse/langfuse/releases/tag/v3.147.0","tags":["x_refsource_MISC"],"url":"https://github.com/langfuse/langfuse/releases/tag/v3.147.0"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2658c1726d9f82a7a5692d6e237f7a9ae3e9a17827bc3052fff4f3d525b756ec · sha256:50e1596ae8bb7431… · /containers/cna/references/2
{"name":"https://github.com/langfuse/langfuse/security/advisories/GHSA-pvq7-vvfj-p98x","tags":["x_refsource_CONFIRM"],"url":"https://github.com/langfuse/langfuse/security/advisories/GHSA-pvq7-vvfj-p98x"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2658c1726d9f82a7a5692d6e237f7a9ae3e9a17827bc3052fff4f3d525b756ec · sha256:50e1596ae8bb7431… · /containers/cna/references/0
{"name":"https://langfuse.com/docs/prompt-management/features/webhooks-slack-integrations","tags":["x_refsource_MISC"],"url":"https://langfuse.com/docs/prompt-management/features/webhooks-slack-integrations"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2658c1726d9f82a7a5692d6e237f7a9ae3e9a17827bc3052fff4f3d525b756ec · sha256:50e1596ae8bb7431… · /containers/cna/references/3
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.