CVE-2020-1762Network attack vector

Session impersonation via insufficient JWT claim validation

Published Apr 27, 2020 · Updated Aug 4, 2024

Session fixation in Kiali 0.4.0 through 1.15.0 allows remote attackers with a stolen JWT cookie to impersonate a Kiali user. Session checks accepted signed cookies without requiring expiration and session-ID claims or ensuring the subject still matched the configured login username. Possession of a stolen cookie was sufficient to view and alter Istio configuration with the impersonated user's Kiali privileges.

CVSS severity8.6
High
EPSS probability1.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Session fixation in Kiali 0.4.0 through 1.15.0 allows remote attackers with a stolen JWT cookie to impersonate a Kiali user. Session checks accepted signed cookies without requiring expiration and session-ID claims or ensuring the subject still matched the configured login username. Possession of a stolen cookie was sufficient to view and alter Istio configuration with the impersonated user's Kiali privileges.

The record

CVE
CVE-2020-1762
Published
Apr 27, 2020
Updated
Aug 4, 2024
Vendor
Kiali
Product
Kiali
Classifications
CWE-384, CWE-613, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 27, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.4.0, < 1.15.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kiali · Kialiversion=>= 0.4.0, < 1.15.1

Published CVSS scores

8.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
7.0Red HatCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
8.6GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-384Session Fixation
CWE-613Insufficient Session Expiration
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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