CVE-2026-16028

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 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

0.36% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 30.0% of scored records. A rank, not a probability.

NVD base score

7.5 (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:N/I:N/A:H

NVD analysis status

Deferred. NVD last modified this record on 2026-09-08.

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

2026-09-07 18:39Z1 MO AGO

Last updated

2026-09-08 18:39Z1 MO AGO

Reserved

2026-07-17

Assigning CNA

CPANSec

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-401Missing Release of Memory after Effective LifetimeVariant

Data version

5.2

Document digest

c732e28bc5cd358aac302611a835219bf8923192da9c5ab9a3d84c80750f0d80

• metacpan.orghttps://metacpan.org/release/CRUX/Protocol-HTTP2-1.13/source/lib/Protocol/HTTP2/Stream.pm#L113-126
• github.comhttps://github.com/vlet/p5-Protocol-HTTP2/commit/27a488a34d74fd16f123e5e6186d4f677faa246f.patchpatch
• metacpan.orghttps://metacpan.org/release/CRUX/Protocol-HTTP2-1.14/changesrelease-notes
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/09/07/2