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Vulnerability Details :

CVE-2026-50163

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-17 Jul, 2026 | 19:36
Updated At-20 Jul, 2026 | 15:01
Rejected At-
Credits

oras-go: Hardlink entry with relative Linkname escapes extract dir via process CWD resolution in `oras-go` tar extraction

oras-go is a Go library for managing OCI artifacts. Prior to 2.6.2, ensureLinkPath in content/file/utils.go:262-275 validates a hardlink target relative to the extract base but returns the unresolved target, causing os.Link("victim.secret", "<extract_base>/payload.tar.gz/evil_cwd_link") to resolve header.Linkname against the process current working directory for a Typeflag=TypeLink entry such as Name=payload.tar.gz/evil_cwd_link and Linkname="victim.secret" with io.deis.oras.content.unpack: "true", which can expose or tamper with files such as .env, .git/config, .aws/credentials, and ~/.ssh/config. This issue is fixed in version 2.6.2.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:17 Jul, 2026 | 19:36
Updated At:20 Jul, 2026 | 15:01
Rejected At:
▼CVE Numbering Authority (CNA)
oras-go: Hardlink entry with relative Linkname escapes extract dir via process CWD resolution in `oras-go` tar extraction

oras-go is a Go library for managing OCI artifacts. Prior to 2.6.2, ensureLinkPath in content/file/utils.go:262-275 validates a hardlink target relative to the extract base but returns the unresolved target, causing os.Link("victim.secret", "<extract_base>/payload.tar.gz/evil_cwd_link") to resolve header.Linkname against the process current working directory for a Typeflag=TypeLink entry such as Name=payload.tar.gz/evil_cwd_link and Linkname="victim.secret" with io.deis.oras.content.unpack: "true", which can expose or tamper with files such as .env, .git/config, .aws/credentials, and ~/.ssh/config. This issue is fixed in version 2.6.2.

Affected Products
Vendor
oras-project
Product
oras-go
Versions
Affected
  • < 2.6.2
Problem Types
TypeCWE IDDescription
CWECWE-22CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWECWE-59CWE-59: Improper Link Resolution Before File Access ('Link Following')
Type: CWE
CWE ID: CWE-22
Description: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Type: CWE
CWE ID: CWE-59
Description: CWE-59: Improper Link Resolution Before File Access ('Link Following')
Metrics
VersionBase scoreBase severityVector
3.17.1HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Version: 3.1
Base score: 7.1
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp
x_refsource_CONFIRM
https://github.com/oras-project/oras-go/pull/1232
x_refsource_MISC
https://github.com/oras-project/oras-go/commit/c463c654ab3ef34422c1764cd619806cebf20451
x_refsource_MISC
https://github.com/oras-project/oras-go/releases/tag/v2.6.2
x_refsource_MISC
Hyperlink: https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/oras-project/oras-go/pull/1232
Resource:
x_refsource_MISC
Hyperlink: https://github.com/oras-project/oras-go/commit/c463c654ab3ef34422c1764cd619806cebf20451
Resource:
x_refsource_MISC
Hyperlink: https://github.com/oras-project/oras-go/releases/tag/v2.6.2
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp
exploit
Hyperlink: https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp
Resource:
exploit
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:17 Jul, 2026 | 20:17
Updated At:20 Jul, 2026 | 16:17

oras-go is a Go library for managing OCI artifacts. Prior to 2.6.2, ensureLinkPath in content/file/utils.go:262-275 validates a hardlink target relative to the extract base but returns the unresolved target, causing os.Link("victim.secret", "<extract_base>/payload.tar.gz/evil_cwd_link") to resolve header.Linkname against the process current working directory for a Typeflag=TypeLink entry such as Name=payload.tar.gz/evil_cwd_link and Linkname="victim.secret" with io.deis.oras.content.unpack: "true", which can expose or tamper with files such as .env, .git/config, .aws/credentials, and ~/.ssh/config. This issue is fixed in version 2.6.2.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.1HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
N/A
Type: Secondary
Version: 3.1
Base score: 7.1
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-22Secondarysecurity-advisories@github.com
CWE-59Secondarysecurity-advisories@github.com
CWE ID: CWE-22
Type: Secondary
Source: security-advisories@github.com
CWE ID: CWE-59
Type: Secondary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/oras-project/oras-go/commit/c463c654ab3ef34422c1764cd619806cebf20451security-advisories@github.com
N/A
https://github.com/oras-project/oras-go/pull/1232security-advisories@github.com
N/A
https://github.com/oras-project/oras-go/releases/tag/v2.6.2security-advisories@github.com
N/A
https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qpsecurity-advisories@github.com
N/A
https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp134c704f-9b21-4f2e-91b3-4a467353bcc0
N/A
Hyperlink: https://github.com/oras-project/oras-go/commit/c463c654ab3ef34422c1764cd619806cebf20451
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/oras-project/oras-go/pull/1232
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/oras-project/oras-go/releases/tag/v2.6.2
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/oras-project/oras-go/security/advisories/GHSA-fxhp-mv3v-67qp
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource: N/A

Change History

0
Information is not available yet

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