How severe is CVE-2026-13739?

CVE-2026-13739 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-13739 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-13739?

CVE-2026-13739 affects Commvault. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-13739?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-13739 published?

CVE-2026-13739 was published on 2026-08-11 and last updated on 2026-09-09.

CVE-2026-13739

CVE-2026-13739 is a critical-severity vulnerability in Commvault with a CVSS 3.x base score of 9.8. 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-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 8.8
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Commvault
Published: 2026-08-11
Last modified: 2026-09-09

Description

A legacy endpoint in Command Center contained an unauthenticated server-side request forgery (SSRF) vulnerability related to the handling of arbitrary target URLs. Software customers upgrade to resolved maintenance release. Update Command Center.

Frequently asked questions

What is CVE-2026-13739?: A legacy endpoint in Command Center contained an unauthenticated server-side request forgery (SSRF) vulnerability related to the handling of arbitrary target URLs. Software customers upgrade to resolved maintenance release. Update Command Center.
How severe is CVE-2026-13739?: CVE-2026-13739 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-13739 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-13739?: CVE-2026-13739 affects Commvault. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-13739?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-13739 published?: CVE-2026-13739 was published on 2026-08-11 and last updated on 2026-09-09.

References

https://documentation.commvault.com/securityadvisories/CV_2026_07_5.html

Affected products (1)

cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:*

More vulnerabilities in Commvault

CVE-2025-34028 — Critical (CVSS 10.0): The Commvault Command Center Innovation Release allows an unauthenticated actor to upload ZIP files that represent…
CVE-2026-77098 — Critical (CVSS 9.8): Private Metrics Server contained an SQL injection condition affecting database operations. Software customers upgrade…
CVE-2026-77092 — Critical (CVSS 9.8): Content Extractor contained a deserialization of untrusted data issue affecting privilege management. Software…
CVE-2026-77089 — Critical (CVSS 9.8): Command Center API contained an authentication bypass issue affecting privilege management. Software customers upgrade…
CVE-2026-13738 — Critical (CVSS 9.8): CommServe contained an authorization bypass vulnerability affecting a limited set of command execution operations.…
CVE-2026-13737 — Critical (CVSS 9.8): CommServe contained an allowlist bypass vulnerability affecting command execution authorization. Software customers…

All CVEs affecting Commvault →

Other CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities

CVE-2026-54734 — Critical (CVSS 10.0): Prebid Server Java is the Java version of Prebid Server. Prior to 3.43.0, certain bidder adapters interpolate…
CVE-2026-76193 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in…
CVE-2026-69502 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Azure SQL Database allows an unauthorized attacker to elevate privileges over a…
CVE-2026-65801 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Microsoft Exchange Online allows an unauthorized attacker to elevate privileges…
CVE-2026-48331 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in…
CVE-2026-54735 — Critical (CVSS 10.0): Prebid Server is an open-source solution for running real-time advertising auctions in the cloud. Prior to version…

Browse all CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities →