GitLab up to 19.2.6/19.3.2/19.4.0 Regular Expression Parsing double free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.75

Summaryinfo

A vulnerability classified as critical was found in GitLab up to 19.2.6/19.3.2/19.4.0. The impacted element is an unknown function of the component Regular Expression Parsing. Such manipulation leads to double free. This vulnerability is uniquely identified as CVE-2026-89078. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in GitLab up to 19.2.6/19.3.2/19.4.0 and classified as critical. Affected by this issue is an unknown function of the component Regular Expression Parsing. The manipulation with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability. CVE summarizes:

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary code on the GitLab server due to a double free issue when parsing a specially crafted regular expression in a CI/CD configuration.

The advisory is available at gitlab.com. This vulnerability is handled as CVE-2026-89078 since 09/10/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available.

Upgrading to version 19.2.7, 19.3.3 or 19.4.1 eliminates this vulnerability.

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Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.9
CNA Vector (GitLab): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: GitLab 19.2.7/19.3.3/19.4.1

Timelineinfo

09/10/2026 CVE reserved
09/23/2026 +13 days VulDB entry created
09/24/2026 +0 days Advisory disclosed
09/24/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gitlab.com
Status: Confirmed

CVE: CVE-2026-89078 (🔒)
GCVE (CVE): GCVE-0-2026-89078
GCVE (VulDB): GCVE-100-409262

Entryinfo

Created: 09/24/2026 01:37
Changes: 09/24/2026 01:37 (63)
Complete: 🔍
Cache ID: 216::103

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