CVE-2026-34197

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-04-16. Federal remediation due 2026-04-30.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

97.22% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 99.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-08-04.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

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

2026-04-07 07:50Z5 MO AGO

Last updated

2026-08-17 12:05Z18 DAYS AGO

Reserved

2026-03-26

Assigning CNA

apache

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-94Improper Control of Generation of Code ('Code Injection')Base

Data version

5.2

Document digest

8157759b46e93a6b8f9e3f384d2348c9adadbbf105fc0fdc5bcc97bbbc23514f

• activemq.apache.orghttps://activemq.apache.org/security-advisories.data/CVE-2026-34197-announcement.txtvendor-advisory
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/04/06/3
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34197government-resource
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-34197vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2455869https://bugzilla.redhat.com/show_bug.cgi?id=2455869issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34197.jsonx_sadp-csaf-vex