How severe is CVE-2026-13540?

CVE-2026-13540 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-13540 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-13540?

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

When was CVE-2026-13540 published?

CVE-2026-13540 was published on 2026-06-29.

CVE-2026-13540

CVE-2026-13540 is a medium-severity vulnerability with a CVSS 3.x base score of 6.3. 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: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Published: 2026-06-29
Last modified: 2026-06-29

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.

Frequently asked questions

What is CVE-2026-13540?: 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.
How severe is CVE-2026-13540?: CVE-2026-13540 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-13540 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-13540?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-13540 published?: CVE-2026-13540 was published on 2026-06-29.

References

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

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