CVE-2023-28623

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.52% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 44.3% of scored records. A rank, not a probability.

NVD base score

3.7 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2023-05-19 21:04Z3 YR AGO

Last updated

2025-02-12 17:01Z1 YR AGO

Reserved

2023-03-20

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

• CWE-285Improper AuthorizationClass
• CWE-862Missing AuthorizationClass

Data version

5.1

Document digest

736049277f1b67b35f7020bb735407d0dfac1ce40e7fe890fd1c6bed5d36c6c3

• github.comhttps://github.com/zulip/zulip/security/advisories/GHSA-7p62-pjwg-56rvx_refsource_CONFIRM
• github.comhttps://github.com/zulip/zulip/commit/3df1b4dd7c210c21deb6f829df19412b74573f8dx_refsource_MISC