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CVE-2023-6837

Incorrect Authorization in Multiple WSO2 Products via Federated Authentication with JIT Provisioning Leading to User Impersonation

High8.5EPSS 0.46%
Published
Updated
Reserved
Assigned by
WSO2

Description

Multiple WSO2 products have been identified as vulnerable to perform user impersonatoin using JIT provisioning. In order for this vulnerability to have any impact on your deployment, following conditions must be met: * An IDP configured for federated authentication and JIT provisioning enabled with the "Prompt for username, password and consent" option. * A service provider that uses the above IDP for federated authentication and has the "Assert identity using mapped local subject identifier" flag enabled. Attacker should have: * A fresh valid user account in the federated IDP that has not been used earlier. * Knowledge of the username of a valid user in the local IDP. When all preconditions are met, a malicious actor could use JIT provisioning flow to perform user impersonation.

Timeline

  1. ID reserved

    By WSO2

  2. Published

  3. · 22 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2023-6837, by who scored it
Scored byCVSSScoreVector
WSO2CNA (assigner)3.1High8.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
NVDNVD · Modified3.1High8.2CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
EPSS (exploitation in 30 days)
0.46% · top 60% of all CVEs (7 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.5.

Weakness

Affected products

  • WSO2 · WSO2 API Manager

    • unknown < 2.5.0
    • affected 2.5.0 – < 2.5.0.32
    • affected 2.6.0 – < 2.6.0.52
    • affected 3.0.0 – < 3.0.0.50
    • affected 3.1.0 – < 3.1.0.72
    • affected 3.2.0 – < 3.2.0.86
    • affected 4.0.0 – < 4.0.0.35
  • WSO2 · WSO2 Identity Server

    • unknown < 5.6.0
    • affected 5.6.0 – < 5.6.0.16
    • affected 5.7.0 – < 5.7.0.35
    • affected 5.8.0 – < 5.8.0.26
    • affected 5.9.0 – < 5.9.0.38
    • affected 5.10.0 – < 5.10.0.78
    • affected 5.11.0 – < 5.11.0.69
  • WSO2 · WSO2 Identity Server as Key Manager

    • unknown < 5.6.0
    • affected 5.6.0 – < 5.6.0.17
    • affected 5.7.0 – < 5.7.0.39
    • affected 5.9.0 – < 5.9.0.45
    • affected 5.10.0 – < 5.10.0.80
  • WSO2 · WSO2 Carbon Identity Application Authentication Framework

    • affected 5.11.256 – < 5.11.256.3
    • affected 5.12.153 – < 5.12.153.21
    • affected 5.12.387 – < 5.12.387.7
    • affected 5.14.97 – < 5.14.97.22
    • affected 5.17.5 – < 5.17.5.106
    • affected 5.18.187 – < 5.18.187.76
    • unaffected 5.20.254 – ≤ *

Affected packages

From reviewed advisories of the GitHub Advisory Database.

What to do

Solution: Follow the instructions given on  https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2022/WSO2-2021-1... https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2022/WSO2-2021-1573/#solution

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .