CVE-2026-32282

On Linux, if the target of Root.Chmod is replaced with a symlink while the chmod operation is in progress, Chmod can operate on the target of the symlink, even when the target lies outside the root. The Linux fchmodat syscall silently ignores the AT_SYMLINK_NOFOLLOW flag, which Root.Chmod uses to avoid symlink traversal. Root.Chmod checks its target before acting and returns an error if the target is a symlink lying outside the root, so the impact is limited to cases where the target is replaced with a symlink between the check and operation.

CVSS v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://go.dev/cl/763761	Patch
https://go.dev/issue/78293	Issue Tracking
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU	Release Notes Mailing List
https://pkg.go.dev/vuln/GO-2026-4864	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:golang:go::::::::
	cpe:2.3:a:golang:go::::::::

History

16 Apr 2026, 19:15

Type	Values Removed	Values Added
CPE		cpe:2.3:a:golang:go::::::::
First Time		Golang go Golang
CWE		CWE-59
References	~~() https://go.dev/cl/763761 -~~	() https://go.dev/cl/763761 - Patch
References	~~() https://go.dev/issue/78293 -~~	() https://go.dev/issue/78293 - Issue Tracking
References	~~() https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU -~~	() https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU - Release Notes, Mailing List
References	~~() https://pkg.go.dev/vuln/GO-2026-4864 -~~	() https://pkg.go.dev/vuln/GO-2026-4864 - Vendor Advisory

13 Apr 2026, 19:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.4

08 Apr 2026, 02:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-08 02:16

Updated : 2026-04-16 19:15

NVD link : CVE-2026-32282

Mitre link : CVE-2026-32282

CVE.ORG link : CVE-2026-32282

JSON object : View

Products Affected

golang

go

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

{"id": "CVE-2026-32282", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.5}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.5}]}, "published": "2026-04-08T02:16:03.467", "references": [{"url": "https://go.dev/cl/763761", "tags": ["Patch"], "source": "security@golang.org"}, {"url": "https://go.dev/issue/78293", "tags": ["Issue Tracking"], "source": "security@golang.org"}, {"url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU", "tags": ["Release Notes", "Mailing List"], "source": "security@golang.org"}, {"url": "https://pkg.go.dev/vuln/GO-2026-4864", "tags": ["Vendor Advisory"], "source": "security@golang.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-59"}]}], "descriptions": [{"lang": "en", "value": "On Linux, if the target of Root.Chmod is replaced with a symlink while the chmod operation is in progress, Chmod can operate on the target of the symlink, even when the target lies outside the root. The Linux fchmodat syscall silently ignores the AT_SYMLINK_NOFOLLOW flag, which Root.Chmod uses to avoid symlink traversal. Root.Chmod checks its target before acting and returns an error if the target is a symlink lying outside the root, so the impact is limited to cases where the target is replaced with a symlink between the check and operation."}], "lastModified": "2026-04-16T19:15:39.400", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C6C9C072-9817-402D-877F-F83584B07017", "versionEndExcluding": "1.25.9"}, {"criteria": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39FE9BAF-55E9-43AA-B14E-239E7EF1D65D", "versionEndExcluding": "1.26.2", "versionStartIncluding": "1.26.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@golang.org"}