How severe is CVE-2026-76353?

CVE-2026-76353 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2026-76353 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-76353?

CVE-2026-76353 affects Splunk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-76353?

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

When was CVE-2026-76353 published?

CVE-2026-76353 was published on 2026-08-19 and last updated on 2026-08-21.

CVE-2026-76353

CVE-2026-76353 is a medium-severity vulnerability in Splunk with a CVSS 3.x base score of 5.4. 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-24.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-24
Affected product: Splunk
Published: 2026-08-19
Last modified: 2026-08-21

Description

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, a user who does not hold the "admin" or "power" Splunk roles could submit a crafted knowledge bundle delta to delete arbitrary files accessible to Splunk Enterprise on a cluster manager. This could affect system integrity and disrupt service. The vulnerability is possible because knowledge bundle delta processing does not restrict removal paths to the staging directory and the endpoint does not enforce the expected authorization boundary. For more information see Knowledge bundle replication overview (https://help.splunk.com/en/splunk-enterprise/administer/distributed-search/10.4/knowledge-bundle-replication/knowledge-bundle-replication-overview) in the Splunk documentation.

Frequently asked questions

What is CVE-2026-76353?: In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, a user who does not hold the "admin" or "power" Splunk roles could submit a crafted knowledge bundle delta to delete arbitrary files accessible to Splunk Enterprise on a cluster manager. This could affect system integrity and disrupt service. The vulnerability is possible because knowledge bundle delta processing does not restrict removal paths to the staging directory and the endpoint does not enforce the expected authorization boundary. For more information see Knowledge bundle replication overview (https://help.splunk.com/en/splunk-enterprise/administer/distributed-search/10.4/knowledge-bundle-replication/knowledge-bundle-replication-overview) in the Splunk documentation.
How severe is CVE-2026-76353?: CVE-2026-76353 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2026-76353 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-76353?: CVE-2026-76353 affects Splunk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-76353?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-76353 published?: CVE-2026-76353 was published on 2026-08-19 and last updated on 2026-08-21.

References

https://advisory.splunk.com/advisories/SVD-2026-0801

Affected products (1)

cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*

More vulnerabilities in Splunk

CVE-2026-20253 — Critical (CVSS 9.8): In Splunk Enterprise 10.2 versions below 10.2.4 and 10 versions below 10.0.7, an unauthenticated user could create or…
CVE-2017-17067 — Critical (CVSS 9.8): Splunk Web in Splunk Enterprise 7.0.x before 7.0.0.1, 6.6.x before 6.6.3.2, 6.5.x before 6.5.6, 6.4.x before 6.4.9, and…
CVE-2016-10126 — Critical (CVSS 9.8): Splunk Web in Splunk Enterprise 5.0.x before 5.0.17, 6.0.x before 6.0.13, 6.1.x before 6.1.12, 6.2.x before 6.2.12,…
CVE-2026-76312 — Critical (CVSS 9.4): In Splunk Enterprise versions below 10.4.1, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user who can read the…
CVE-2026-76311 — Critical (CVSS 9.4): In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user who has an embedded…
CVE-2026-76310 — Critical (CVSS 9.4): In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user who has an embedded…

All CVEs affecting Splunk →

Other CWE-24 vulnerabilities

CVE-2026-39813 — Critical (CVSS 9.8): A path traversal: '../filedir' vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through…
CVE-2026-49103 — Critical (CVSS 9.4): Webmin before 2.640 does not safely construct a filename for saving of an attachment within the mailboxes component.…
CVE-2025-61318 — Critical (CVSS 9.1): Emlog Pro 2.5.20 has an arbitrary file deletion vulnerability. This vulnerability stems from the admin/template.php…
CVE-2023-6699 — Critical (CVSS 9.1): The WP Compress – Image Optimizer [All-In-One] plugin for WordPress is vulnerable to Directory Traversal in all…
CVE-2025-54769 — High (CVSS 8.8): An authenticated, read-only user can upload a file and perform a directory traversal to have the uploaded file placed…
CVE-2025-60344 — High (CVSS 8.6): A path traversal (directory traversal) vulnerability in D-Link DSR series routers allows unauthenticated remote…

Browse all CWE-24 vulnerabilities →