CVE-2026-87830

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total 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

0.21% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 12.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-10-06.

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

2026-09-30 11:57Z28 DAYS AGO

Last updated

2026-09-30 19:47Z28 DAYS AGO

Reserved

2026-09-09

Assigning CNA

apache

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

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

Weaknesses

• CWE-917Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')Base

Data version

5.2

Document digest

b2b3a94575c434b760a8111e29f848e45fa33998fe98825ca5abbcf03b41bf05

• lists.apache.orghttps://lists.apache.org/thread.html/lwlozb1x20d16f9dnyvoygc9rrhzq2vnvendor-advisory
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/09/30/9