vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2020-8843

HIGH
7.4
CVSS Score
Published: February 14, 2020 at 06:45 PM UTC
Updated: June 17, 2026 at 03:27 AM UTC
1 product affected across 1 vendorIstio

Using N/A by N/A?

Get instant alerts when new vulnerabilities affect N/A - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7.4
Exploit prediction
EPSS 1%

Description

An issue was discovered in Istio 1.3 through 1.3.6. Under certain circumstances, it is possible to bypass a specifically configured Mixer policy. Istio-proxy accepts the x-istio-attributes header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to a source equal to ingress. To exploit this vulnerability, someone has to encode a source.uid in this header. This feature is disabled by default in Istio 1.3 and 1.4.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Istio· Istio
95%
1.3.0 ≤ v ≤ 1.3.6

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCPatch
Source: [email protected]
https://github.com/istio/istio/commits/master
x_refsource_MISCVendor Advisory
Source: [email protected]
https://istio.io/news/security/
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://istio.io/news/security/istio-security-2020-002/

CVSS

7.4HIGH[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card