Is CVE-2026-13540 in the CISA KEV catalog?

No. CVE-2026-13540 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-13540?

CVE-2026-13540 has a CVSS v3 base score of 6.3 (MEDIUM).

What is the EPSS score for CVE-2026-13540?

CVE-2026-13540 has an EPSS score of 0.23% (13th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2026-13540?

No published fix for CVE-2026-13540 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2026-13540

MEDIUM

6.3

CVSS v3

NVD

Description

A security flaw has been discovered in GitBucket up to 4.46.1. This affects the function Git.cloneRepository.setURI of the file src/main/scala/gitbucket/core/service/RepositoryCreationService.scala. Performing a manipulation of the argument url results in server-side request forgery. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The patch is named 487a9b980f56aa73b6a044b1e86a92eed5043215. To fix this issue, it is recommended to deploy a patch.

CWE-918Server-Side Request Forgery (SSRF)

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Exploit Intelligence

0.23%probability of exploitation in 30 days

13thpercentile

Low risk: more likely to be exploited than 13% of all known CVEs.

References

Other references8

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-29.