How severe is CVE-2017-8449?

CVE-2017-8449 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-8449 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8449?

CVE-2017-8449 affects Elastic X-pack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8449?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-8449 published?

CVE-2017-8449 was published on 2017-06-16 and last updated on 2026-06-17.

CVE-2017-8449

CVE-2017-8449 is a medium-severity vulnerability in Elastic X-pack with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Elastic X-pack
Published: 2017-06-16
Last modified: 2026-06-17

Description

X-Pack Security 5.2.x would allow access to more fields than the user should have seen if the field level security rules used a mix of grant and exclude rules when merging multiple rules with field level security rules for the same index.

Frequently asked questions

What is CVE-2017-8449?: X-Pack Security 5.2.x would allow access to more fields than the user should have seen if the field level security rules used a mix of grant and exclude rules when merging multiple rules with field level security rules for the same index.
How severe is CVE-2017-8449?: CVE-2017-8449 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-8449 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8449?: CVE-2017-8449 affects Elastic X-pack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8449?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-8449 published?: CVE-2017-8449 was published on 2017-06-16 and last updated on 2026-06-17.

References

https://www.elastic.co/community/security

Affected products (1)

cpe:2.3:a:elastic:x-pack:*:*:*:*:*:*:*:*

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