GitHub Enterprise Server up to 3.21.3 Dependabot Updater Container path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k2.24+

Summaryinfo

A vulnerability classified as critical has been found in GitHub Enterprise Server up to 3.21.3. This issue affects some unknown processing of the component Dependabot Updater Container. The manipulation leads to path traversal. This vulnerability is traded as CVE-2026-15343. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in GitHub Enterprise Server up to 3.21.3. It has been rated as critical. This issue affects some unknown processing of the component Dependabot Updater Container. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability.

The identification of this vulnerability is CVE-2026-15343. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 3.17.18, 3.18.12, 3.19.9, 3.20.5 or 3.21.3 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Path traversal
CWE: CWE-22
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: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: Enterprise Server 3.17.18/3.18.12/3.19.9/3.20.5/3.21.3

Timelineinfo

07/17/2026 Advisory disclosed
07/17/2026 +0 days VulDB entry created
07/17/2026 +0 days VulDB entry last update

Sourcesinfo

Status: Confirmed

CVE: CVE-2026-15343 (🔒)
GCVE (CVE): GCVE-0-2026-15343
GCVE (VulDB): GCVE-100-379889

Entryinfo

Created: 07/17/2026 19:49
Changes: 07/17/2026 19:49 (50)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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