What is CVE-2026-47734?

CVE-2026-47734 is a medium-severity vulnerability in Jelmer Dulwich, classified under Uncontrolled Resource Consumption. CVSS score: 5.7/10. Published 2026-06-10.

How severe is CVE-2026-47734?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Resource exhaustion in Jelmer Dulwich

CVE-2026-47734

Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.1.0 and prior to version 1.2.5, a client with push access could push a tiny crafted thin pack (~174 bytes) whose delta header declares a…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.002 (8.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H.

Affected products

Jelmer Dulwich — versions >= 0.1.0, < 1.2.5

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-47734?: CVE-2026-47734 is a medium-severity vulnerability in Jelmer Dulwich, classified under Uncontrolled Resource Consumption. CVSS score: 5.7/10. Published 2026-06-10.
How severe is CVE-2026-47734?: Medium severity. CVSS v3 base score is 5.7 out of 10.