CVE-2026-112179 MISP Event Synchronization Exposes Non-Exportable Tags on Remote Instances
MISP synchronization logic flaw discloses non-exportable tags to remote instances, requiring patched versions for secure threat sharing.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-112179?
CVE-2026-112179 is a medium-severity vulnerability in MISP, published on 19 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In MISP, the event synchronization process contained a logic error in the preparation of event reports for remote push. The filtering of non-exportable tags was applied only once after the iteration over all reports, rather than to each individual report.
As a result:
- All reports except the last one in the set were pushed to the remote MISP instance with their non-exportable tags intact, effectively disclosing restricted tag information to the receiving instance.
- When the last report in the set was withheld (empty), a null report was pushed, causing the remote instance to fail saving the event.
This issue affects any MISP instance configured to push events with multiple reports to a remote server via synchronization.
Affected: <2.5.48.
Weakness: CWE-200
Which versions are affected by CVE-2026-112179?
How do I fix CVE-2026-112179?
No fix has been published for CVE-2026-112179 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-112179 being exploited?
There is no known exploitation of CVE-2026-112179 in the wild and no public exploit code.
Sources
Also known as GHSA-xqrq-qg67-37w5.