CVE-2026-84371

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

0.18% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 8.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Received. NVD last modified this record on 2026-09-02.

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

2026-09-01 20:51Z1 DAY AGO

Last updated

2026-09-02 16:02Z12 HR AGO

Reserved

2026-09-01

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 5.4)

CNA CVSS vector

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

Weaknesses

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

Data version

5.2

Document digest

3911ee7b0533880d4d87f683c27e915370c770a86746158eb5b9b36cf3041403

• github.comhttps://github.com/apostrophecms/apostrophe/security/advisories/GHSA-g8qq-57p8-ggw5x_refsource_CONFIRM
• github.comhttps://github.com/apostrophecms/apostrophe/pull/5552x_refsource_MISC
• github.comhttps://github.com/apostrophecms/apostrophe/commit/1135516a1a4a8f9638641c460488a43d8af20081x_refsource_MISC
• github.comhttps://github.com/apostrophecms/apostrophe/commit/38ff1106c8176b16c2da9872acd9b449adcbb949x_refsource_MISC
• github.comhttps://github.com/apostrophecms/apostrophe/blob/main/packages/sanitize-html/CHANGELOG.mdx_refsource_MISC