How severe is CVE-2015-1856?

CVE-2015-1856 has a CVSS 2.0 base score of 5.5, rated medium severity.

Is CVE-2015-1856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-1856?

CVE-2015-1856 primarily affects Openstack Swift. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-1856?

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

When was CVE-2015-1856 published?

CVE-2015-1856 was published on 2015-04-17 and last updated on 2026-06-17.

CVE-2015-1856

CVE-2015-1856 is a medium-severity vulnerability in Openstack Swift with a CVSS 2.0 base score of 5.5. 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 5.5)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Openstack Swift
Published: 2015-04-17
Last modified: 2026-06-17

Description

OpenStack Object Storage (Swift) before 2.3.0, when allow_version is configured, allows remote authenticated users to delete the latest version of an object by leveraging listing access to the x-versions-location container.

Frequently asked questions

What is CVE-2015-1856?: OpenStack Object Storage (Swift) before 2.3.0, when allow_version is configured, allows remote authenticated users to delete the latest version of an object by leveraging listing access to the x-versions-location container.
How severe is CVE-2015-1856?: CVE-2015-1856 has a CVSS 2.0 base score of 5.5, rated medium severity.
Is CVE-2015-1856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-1856?: CVE-2015-1856 primarily affects Openstack Swift. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-1856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-1856 published?: CVE-2015-1856 was published on 2015-04-17 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*

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