CVE-2021-22227Network attack vector

Victim-authorized actions via reflected release-edit input

Published Jul 7, 2021 · Updated Aug 3, 2024

Reflected XSS in affected GitLab releases before 13.11.6, 13.12.6, and 14.0.2 allows remote attackers to act through victims. The release-editing page reflects attacker-controlled request input into generated HTML without sufficient neutralization. Exploitation requires a victim to open a malicious link, after which injected script can issue actions with that victim's GitLab session.

CVSS severity6.1
Medium
EPSS probability0.95%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in affected GitLab releases before 13.11.6, 13.12.6, and 14.0.2 allows remote attackers to act through victims. The release-editing page reflects attacker-controlled request input into generated HTML without sufficient neutralization. Exploitation requires a victim to open a malicious link, after which injected script can issue actions with that victim's GitLab session.

The record

CVE
CVE-2021-22227
Published
Jul 7, 2021
Updated
Aug 3, 2024
Vendor
GitLab
Product
GitLab
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 7, 2021CVE 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>=12.9, <13.11.6
  2. Affected versionversion=>=13.12, <13.12.6
  3. Affected versionversion=>=14.0, <14.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GitLab · GitLabversion=>=12.9, <13.11.6; version=>=13.12, <13.12.6; version=>=14.0, <14.0.2

Published CVSS scores

6.1GitLabCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

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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