---
title: "CVE-2020-13340: GitLab vulnerability | CubePath"
description: "An issue has been discovered in GitLab affecting all versions prior to 13.2.10, 13.3.7 and 13.4.2: Stored XSS in CI Job Log"
language: en
source: https://cubepath.com/security/cve/CVE-2020-13340
---

# CVE-2020-13340: GitLab vulnerability | CubePath

## Description

An issue has been discovered in GitLab affecting all versions prior to 13.2.10, 13.3.7 and 13.4.2: Stored XSS in CI Job Log

Official description from the CVE record, published by GitLab. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2020-13340)

## Key data

### CVSS 3.1 High 8.7

Score published by GitLab in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

| Metric                 | Value    | What it means                                                                       |
| ---------------------- | -------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network  | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low      | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | Low      | A basic user account is needed.                                                     |
| User interaction       | Required | A user has to do something first, such as opening a file or following a link.       |
| Scope                  | Changed  | The impact can reach other components beyond the vulnerable one.                    |
| Confidentiality impact | High     | Serious or total effect on the secrecy of data.                                     |
| Integrity impact       | High     | Serious or total effect on the trustworthiness of data.                             |
| Availability impact    | None     | No effect on availability.                                                          |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.66748 (66.7% probability)

Percentile

99.3%

Scores of

Nov 10, 2026

Model

v2026.06.15

## Affected products

Products listed in the CVE record, as the CNA published them.

- GitLab

  - affected: >=12.4, <13.2.10
  - affected: >=13.3, <13.3.7
  - affected: >=13.4, <13.4.2

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [gitlab.com/gitlab-org/gitlab/-/issues/233473](https://gitlab.com/gitlab-org/gitlab/-/issues/233473)
- [hackerone.com/reports/950190](https://hackerone.com/reports/950190)
- [gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-1334…](https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13340.json)

## Timeline

1. ID reserved May 21, 2020
2. Record published Oct 8, 2020
3. Record last updated Aug 4, 2024

## Look up another CVE

## About CubePath

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:02 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)