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Fencer Intel
medium 4.3

CVE-2026-78593 json

Improper Control of Generation of Code in Kibana Leading to Privilege Escalation

published 2mo ago modified 2mo ago also BIT-elk-2026-78593 , BIT-kibana-2026-78593 , EUVD-2026-70658

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

An insufficiently validated configuration field in Kibana's Cribl integration allows an authenticated user holding Kibana Fleet management privileges to inject attacker-controlled expressions into a server-side script template, resulting in an Elasticsearch ingest pipeline being written beyond the caller's authorized Elasticsearch permissions.

Patch / fix

  • bitnami elk 8.19.21, 9.4.6, 9.5.3
  • bitnami kibana 8.19.21, 9.4.6, 9.5.3
  • elastic kibana 8.19.21, 9.4.6, 9.5.3
  • elasticsearch kibana 8.19.21, 9.4.6, 9.5.3

Is CVE-2026-78593 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2mo ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
OSV 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
bitnami elk
>=8.0.0, <8.19.21
>=9.0.0, <9.4.6
>=9.5.0, <9.5.3
8.19.21
9.4.6
9.5.3
bitnami kibana
>=8.0.0, <8.19.21
>=9.0.0, <9.4.6
>=9.5.0, <9.5.3
8.19.21
9.4.6
9.5.3

Affected products

  • Elastic Kibana

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.