CVE-2022-43562: splunk Improper Input Validation
CVSS: 5.4v3.1MediumModified
Published 04-11-2022Last modified 05-05-2025
Vulnerability summary
CVE-2022-43562 is a medium (CVSS 5.4) Improper Input Validation vulnerability in splunk. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.8% of scored vulnerabilities.
CVSS score
5.4/10
010
Medium · v3.1 (NVD)EPSS score
0.46%
0%100%
Low · +0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 04-11-2022PublishedVulnerability first disclosed.
- 05-05-2025Last modifiedVulnerability information updated.
Description
In Splunk Enterprise versions below 8.1.12, 8.2.9, and 9.0.2, Splunk Enterprise fails to properly validate and escape the Host header, which could let a remote authenticated user conduct various attacks against the system, including cross-site scripting and cache poisoning.
CVSS metrics
2 scores · 2 sources · 1 versionMedium 5.4Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NSources2 sources · 3.0–5.4
- CVE.orgCNA3.0LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:NDiffers
EPSS trend
Probability
0.46%
Chance of exploitation in the next 30 days
Percentile
39%
Versus all other CVEs
30-day change
+0.03 pp
From 0.44% on 19-09-2026
19-09-202619-10-2026
EPSS score0.46%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
Affected systems
Splunk3 products
- splunk≥ 8.1.0, < 8.1.12 | ≥ 8.2.0, < 8.2.9 | ≥ 9.0.0, < 9.0.2
- splunk_cloud_platform< 9.0.2208
- splunk enterprise≥ 8.1, < 8.1.12 | ≥ 8.2, < 8.2.9 | ≥ 9.0, < 9.0.2
1 vendor · 3 products