How severe is CVE-2019-13420?

CVE-2019-13420 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-2019-13420 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-13420?

CVE-2019-13420 affects Search-guard Search Guard. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-13420?

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

When was CVE-2019-13420 published?

CVE-2019-13420 was published on 2019-08-13 and last updated on 2026-06-17.

CVE-2019-13420

CVE-2019-13420 is a medium-severity vulnerability in Search-guard Search Guard 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-203.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Search-guard Search Guard
Published: 2019-08-13
Last modified: 2026-06-17

Description

Search Guard versions before 21.0 had an timing side channel issue when using the internal user database.

Frequently asked questions

What is CVE-2019-13420?: Search Guard versions before 21.0 had an timing side channel issue when using the internal user database.
How severe is CVE-2019-13420?: CVE-2019-13420 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-2019-13420 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-13420?: CVE-2019-13420 affects Search-guard Search Guard. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-13420?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-13420 published?: CVE-2019-13420 was published on 2019-08-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:search-guard:search_guard:*:*:*:*:*:*:*:*

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