CVE-2022-43411Network attack vector

Webhook token disclosure via non-constant-time comparison

Published Oct 19, 2022 · Updated May 8, 2025

Timing side channel in Jenkins GitLab Plugin 1.5.35 and earlier allows remote attackers to derive a valid webhook token. The webhook validation path compares the supplied X-Gitlab-Token value with the configured job token using a non-constant-time operation. The attacker needs repeated network access to a token-protected /project webhook; a recovered token permits requests that can trigger the configured Jenkins job.

CVSS severity5.3
Medium
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Timing side channel in Jenkins GitLab Plugin 1.5.35 and earlier allows remote attackers to derive a valid webhook token. The webhook validation path compares the supplied X-Gitlab-Token value with the configured job token using a non-constant-time operation. The attacker needs repeated network access to a token-protected /project webhook; a recovered token permits requests that can trigger the configured Jenkins job.

The record

CVE
CVE-2022-43411
Published
Oct 19, 2022
Updated
May 8, 2025
Vendor
Jenkins Project
Product
GitLab Plugin
Classifications
CWE-203, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 19, 2022CVE publishedPublication date reported by the CVE source.
  2. May 8, 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=unspecified <=1.5.35

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Jenkins Project · GitLab Pluginversion=unspecified <=1.5.35

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

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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-203Observable Discrepancy
T1190Exploit Public-Facing Application

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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