CVE-2023-274915.4MediumCWE-20

CVE-2023-27491: Envoy forwards invalid Http2/Http3 downstream headers

envoyproxy · envoy

Affected: envoyproxy · Exploitation: unlikely (under 1%)

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

0.9%probability of exploitation in the next 30 days

59th percentile

050100

Higher than 59% of scored CVEs

5.4MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

Envoy is an open source edge and service proxy designed for cloud-native applications. Compliant HTTP/1 service should reject malformed request lines. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, There is a possibility that non compliant HTTP/1 service may allow malformed requests, potentially leading to a bypass of security policies. This issue is fixed in versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9.

Affected products1

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

envoyproxy · envoy>= 1.25.0, < 1.25.3; >= 1.24.0, < 1.24.4; >= 1.23.0, < 1.23.6; < 1.22.9

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
Weakness: Improper Input Validation · Input Validation and Logic
Vendor: envoyproxy
Published: April 2023
Band: Unlikely (under 1%), April 2023

CoverageNo articles yet

No CyberSIXT article names CVE-2023-27491 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.