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CVE-2026-429265.8MediumCWE-172

CVE-2026-42926: NGINX ngx_http_proxy_v2_module vulnerability

F5 · NGINX Open Source

Vendor fix available · Affected: F5 NGINX Open Source · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.3%probability of exploitation in the next 30 days
28th percentile
050100

Higher than 28% of scored CVEs

5.8MediumCVSS 3.1
LowMedium

DescriptionCVE.org

When NGINX Open Source is configured to proxy HTTP/2 traffic by setting proxy_http_version to 2, and also uses proxy_set_body, an attacker may be able to inject frame headers and payload bytes to the upstream peer. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

  • F5 · NGINX Open Sourcefrom 1.29.4 before 1.30.1

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas
Exploitation
Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV
Not listed
Public check
No public nuclei template
Vendor
F5
Published
May 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-42926 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References