CVE-2023-33186

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

0.61% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 49.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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

2023-05-30 05:31Z3 YR AGO

Last updated

2025-01-10 19:47Z1 YR AGO

Reserved

2023-05-17

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

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

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.1

Document digest

044494b5bd9eb46bc65395bcd3a5d578d84d6514b06f442a1a7c036c194060fb

• github.comhttps://github.com/zulip/zulip/security/advisories/GHSA-4r83-8f94-hrphx_refsource_CONFIRM
• github.comhttps://github.com/zulip/zulip/pull/25370x_refsource_MISC
• github.comhttps://github.com/zulip/zulip/commit/03cfb3d9fe61c975d133121ec31a7357f0c9e18fx_refsource_MISC
• github.comhttps://github.com/zulip/zulip/commit/3ca131743b00f42bad8edbac4ef92656d954c629x_refsource_MISC