CVE-2022-31122Network attack vector

Account takeover via SAML recipient confusion

Published Oct 18, 2022 · Updated Apr 23, 2025

Improper authentication in Wire Server builds before 2022-07-12 or charts before 4.19.0 allows remote attackers to impersonate SAML users. The SAML SSO path confuses a token's intended team when an attacker registers matching IdP metadata on the same backend, causing attacker-controlled assertions to be applied to another team's identities. Exploitation requires target IdP metadata and team-level SAML configuration; it can delete SAML accounts, impersonate users, or create accounts when SCIM is absent.

CVSS severity9.8
Critical
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Wire Server builds before 2022-07-12 or charts before 4.19.0 allows remote attackers to impersonate SAML users. The SAML SSO path confuses a token's intended team when an attacker registers matching IdP metadata on the same backend, causing attacker-controlled assertions to be applied to another team's identities. Exploitation requires target IdP metadata and team-level SAML configuration; it can delete SAML accounts, impersonate users, or create accounts when SCIM is absent.

The record

CVE
CVE-2022-31122
Published
Oct 18, 2022
Updated
Apr 23, 2025
Vendor
Wire Swiss GmbH
Product
Wire Server
Classifications
CWE-1270, CWE-287, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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=< 2022-07-12
  2. Affected versionversion=< 4.19.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wire Swiss GmbH · Wire Serverversion=< 2022-07-12; version=< 4.19.0

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1270Generation of Incorrect Security Tokens
CWE-287Improper Authentication
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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