CVE-2026-26933
published 2026-03-19CVE-2026-26933: Improper Validation of Array Index (CWE-129) in multiple protocol parser components in Packetbeat can lead Denial of Service via Input Data Manipulation…
PriorityP426medium5.7CVSS 3.1
AVAACLPRLUINSUCNINAH
EPSS
0.24%
14.9th percentile
Improper Validation of Array Index (CWE-129) in multiple protocol parser components in Packetbeat can lead Denial of Service via Input Data Manipulation (CAPEC-153). An attacker with the ability to send specially crafted, malformed network packets to a monitored network interface can trigger out-of-bounds read operations, resulting in application crashes or resource exhaustion. This requires the attacker to be positioned on the same network segment as the Packetbeat deployment or to control traffic routed to monitored interfaces.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| elastic | packetbeat | 8.0.0 – 8.19.10 | — |
| elastic | packetbeat | 9.0.0 – 9.2.4 | — |
| elasticsearch | packetbeat | >= 8.0.0 < 8.19.11 | 8.19.11 |
| elasticsearch | packetbeat | >= 9.0.0 < 9.2.5 | 9.2.5 |
| github.com | elastic_beats_v7 | >= 0 < 7.0.0-alpha2.0.20260126223743-dec1b31111ec | 7.0.0-alpha2.0.20260126223743-dec1b31111ec |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
OSV
Packetbeat does not properly validate an array index in multiple protocol parser components in github.com/elastic/beats
osv·2026-04-07
CVE-2026-26933 Packetbeat does not properly validate an array index in multiple protocol parser components in github.com/elastic/beats
Packetbeat does not properly validate an array index in multiple protocol parser components in github.com/elastic/beats
Packetbeat does not properly validate an array index in multiple protocol parser components in github.com/elastic/beats
GHSA
Packetbeat does not properly validate an array index in multiple protocol parser components
ghsa·2026-03-19
CVE-2026-26933 [MEDIUM] CWE-129 Packetbeat does not properly validate an array index in multiple protocol parser components
Packetbeat does not properly validate an array index in multiple protocol parser components
Improper Validation of Array Index (CWE-129) in multiple protocol parser components in Packetbeat can lead Denial of Service via Input Data Manipulation (CAPEC-153). An attacker with the ability to send specially crafted, malformed network packets to a monitored network interface can trigger out-of-bounds read operations, resulting in application crashes or resource exhaustion. This requires the attacker to be positioned on the same network segment as the Packetbeat deployment or to control traffic routed to monitored interfaces.
OSV
Packetbeat does not properly validate an array index in multiple protocol parser components
osv·2026-03-19
CVE-2026-26933 [MEDIUM] Packetbeat does not properly validate an array index in multiple protocol parser components
Packetbeat does not properly validate an array index in multiple protocol parser components
Improper Validation of Array Index (CWE-129) in multiple protocol parser components in Packetbeat can lead Denial of Service via Input Data Manipulation (CAPEC-153). An attacker with the ability to send specially crafted, malformed network packets to a monitored network interface can trigger out-of-bounds read operations, resulting in application crashes or resource exhaustion. This requires the attacker to be positioned on the same network segment as the Packetbeat deployment or to control traffic routed to monitored interfaces.
No detection rules found.
No public exploits indexed.
2026-03-19
Published