CVE-2022-29161Network attack vector

Weak certificate signatures via SHA-1 default

Published May 5, 2022 · Updated Apr 23, 2025

Broken cryptography in the XWiki Crypto API allows attackers to generate X.509 certificates with collision-prone SHA-1 signatures. RSACryptoScriptService injects SHA1withRSAEncryption as its default SignerFactory when extensions request certificate generation. XWiki Standard never calls this API, so exposure requires an extension that uses it; resulting certificates lack collision-resistant identity assurance.

CVSS severity5.4
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken cryptography in the XWiki Crypto API allows attackers to generate X.509 certificates with collision-prone SHA-1 signatures. RSACryptoScriptService injects SHA1withRSAEncryption as its default SignerFactory when extensions request certificate generation. XWiki Standard never calls this API, so exposure requires an extension that uses it; resulting certificates lack collision-resistant identity assurance.

The record

CVE
CVE-2022-29161
Published
May 5, 2022
Updated
Apr 23, 2025
Vendor
CryptPad
Product
XWiki Platform
Classifications
CWE-327
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 5, 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=< 13.10.6
  2. Affected versionversion=>= 14.0.0, < 14.3.1
  3. Affected versionversion=>= 14.4.0, < 14.4-rc-1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CryptPad · XWiki Platformversion=< 13.10.6; version=>= 14.0.0, < 14.3.1; version=>= 14.4.0, < 14.4-rc-1

Published CVSS scores

5.4GitHubCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
9.8NVDCVSS: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 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-327Use of a Broken or Risky Cryptographic Algorithm

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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