CVE-2022-34777Network attack vector

Stored XSS via unescaped webhook build cause

Published Jun 30, 2022 · Updated Aug 3, 2024

Stored XSS in Jenkins GitLab Plugin 1.5.34 and earlier allows remote authenticated users to execute script via webhook build causes. GitLabWebHookCause/description.jelly renders an HTML-formatted shortDescription containing user-controlled webhook fields without safely neutralizing them. Item/Configure permission and a viewer opening the affected build cause are required, exposing data and actions available in the viewer's Jenkins session.

CVSS severity5.4
Medium
EPSS probability73.06%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Jenkins GitLab Plugin 1.5.34 and earlier allows remote authenticated users to execute script via webhook build causes. GitLabWebHookCause/description.jelly renders an HTML-formatted shortDescription containing user-controlled webhook fields without safely neutralizing them. Item/Configure permission and a viewer opening the affected build cause are required, exposing data and actions available in the viewer's Jenkins session.

The record

CVE
CVE-2022-34777
Published
Jun 30, 2022
Updated
Aug 3, 2024
Vendor
Jenkins Project
Product
GitLab Plugin
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 30, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=unspecified <=1.5.34

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · GitLab Pluginversion=unspecified <=1.5.34

Published CVSS scores

8.0GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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