CVE-2026-103858
- Source
- https://cve.org/CVERecord?id=CVE-2026-103858
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103858.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-103858
- Published
- 2026-10-01T11:31:32Z
- Modified
- 2026-10-28T02:30:59Z
- Severity
-
- 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- MISP Incomplete Thread Authorization Allows Unauthorized Read and Post Access to Discussions
- Details
-
MISP contains an incomplete authorization check in the discussion posting functionality. When a user submits a post to a thread or replies to an existing post, the application only verified whether the target thread was restricted to a single organization (org-only distribution). It did not enforce the full thread access control list, including sharing-group membership and event-level visibility.
As a result, an authenticated user who is outside the relevant sharing group or who does not have visibility on the associated event could:
-
Read the thread title and the content of the quoted post
-
Submit a new post into the discussion thread
This constitutes both an information disclosure (reading restricted thread and post content) and an integrity issue (injecting content into a thread the user is not authorized to participate in).
Affected: <2.5.48
-
- Database specific
{ "cna_assigner": "CIRCL", "cwe_ids": [ "CWE-285" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103858.json" }- References
Affected packages
Git / github.com/misp/misp
Affected ranges
- Type
- GIT
- Repo
- https://github.com/misp/misp
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "2.5.48" } ], "source": "AFFECTED_FIELD", "strategy": "SplitRange" }, { "range": [ { "fixed": "79fbd4c75" } ], "source": "REFERENCES_COMMIT" } ] }