CVE-2026-31873
- Source
- https://cve.org/CVERecord?id=CVE-2026-31873
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31873.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-31873
- Aliases
- Published
- 2026-03-12T17:20:35.660Z
- Modified
- 2026-04-10T05:42:56.384929Z
- Severity
-
- 0.0 (None) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N CVSS Calculator
- Summary
- Unhead has a Bypass of URI Scheme Sanitization in makeTagSafe via Case-Sensitivity
- Details
-
Unhead is a document head and template manager. Prior to 2.1.11, The link.href check in makeTagSafe (safe.ts) uses String.includes(), which is case-sensitive. Browsers treat URI schemes case-insensitively. DATA:text/css,... is the same as data:text/css,... to the browser, but 'DATA:...'.includes('data:') returns false. An attacker can inject arbitrary CSS for UI redressing or data exfiltration via CSS attribute selectors with background-image callbacks. This vulnerability is fixed in 2.1.11.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31873.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-79" ] }- References
Affected packages
Git / github.com/unjs/unhead
Affected ranges
- Type
- GIT
- Repo
- https://github.com/unjs/unhead
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
2.*
2.0.0-rc.6
v0.*
v0.0.1
v0.0.2
v0.0.3
v0.0.4
v0.0.5
v0.0.6
v0.0.7
v0.1.0
v0.1.1
v0.1.2
v0.1.3
v0.1.4
v0.2.0
v0.2.1
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.2.6
v0.2.7
v0.3.0
v0.3.1
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.4.4
v0.4.5
v0.4.6
v0.4.7
v0.4.8
v0.5.0
v0.5.1
v0.6.0
v0.6.1
v0.6.2
v0.6.3
v0.6.4
v0.6.5
v0.6.6
v0.6.7
v0.6.8
v0.6.9
v0.7.0
v0.7.1
v1.*
v1.0.0
v1.0.1
v1.0.10
v1.0.11
v1.0.12
v1.0.13
v1.0.15
v1.0.16
v1.0.17
v1.0.18
v1.0.19
v1.0.2
v1.0.20
v1.0.21
v1.0.22
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.7
v1.0.8
v1.0.9
v1.1.0
v1.1.1
v1.1.10
v1.1.11
v1.1.12
v1.1.13
v1.1.14
v1.1.16
v1.1.17
v1.1.2
v1.1.24
v1.1.25
v1.1.26
v1.1.27
v1.1.28
v1.1.29
v1.1.3
v1.1.30
v1.1.31
v1.1.32
v1.1.33
v1.1.34
v1.1.35
v1.1.4
v1.1.5
v1.1.6
v1.1.7
v1.1.8
v1.1.9
v1.10.0
v1.10.0-beta.1
v1.10.0-beta.2
v1.10.0-beta.3
v1.10.0-beta.4
v1.10.0-beta.5
v1.10.0-beta.6
v1.11.15
v1.11.8
v1.11.9
v1.2.0
v1.2.1
v1.2.2
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.3.5
v1.3.6
v1.3.7
v1.3.8
v1.3.9
v1.4.0
v1.4.1
v1.5.0
v1.5.1
v1.5.2
v1.5.3
v1.5.4
v1.5.5
v1.6.0
v1.6.1
v1.6.2
v1.7.0
v1.7.1
v1.7.2
v1.7.3
v1.7.4
v1.7.5
v1.8.0
v1.8.1
v1.8.10
v1.8.11
v1.8.12
v1.8.13
v1.8.14
v1.8.15
v1.8.16
v1.8.17
v1.8.18
v1.8.19
v1.8.2
v1.8.20
v1.8.3
v1.8.4
v1.8.5
v1.8.6
v1.8.7
v1.8.8
v1.8.9
v1.9.0
v1.9.1
v1.9.10
v1.9.11
v1.9.12
v1.9.13
v1.9.14
v1.9.15
v1.9.16
v1.9.2
v1.9.3
v1.9.4
v1.9.5
v1.9.6
v1.9.7
v1.9.8
v1.9.9
v2.*
v2.0.0
v2.0.0-alpha.0
v2.0.0-alpha.1
v2.0.0-alpha.2
v2.0.0-alpha.20
v2.0.0-alpha.21
v2.0.0-alpha.22
v2.0.0-alpha.23
v2.0.0-alpha.24
v2.0.0-alpha.25
v2.0.0-alpha.26
v2.0.0-alpha.27
v2.0.0-alpha.28
v2.0.0-alpha.29
v2.0.0-alpha.3
v2.0.0-alpha.30
v2.0.0-alpha.31
v2.0.0-alpha.32
v2.0.0-alpha.4
v2.0.0-alpha.5
v2.0.0-alpha.6
v2.0.0-alpha.7
v2.0.0-beta.0
v2.0.0-beta.1
v2.0.0-beta.2
v2.0.0-rc.1
v2.0.0-rc.11
v2.0.0-rc.12
v2.0.0-rc.13
v2.0.0-rc.2
v2.0.0-rc.3
v2.0.0-rc.4
v2.0.0-rc.5
v2.0.0-rc.6
v2.0.0-rc.7
v2.0.0-rc.8
v2.0.1
v2.0.10
v2.0.11
v2.0.12
v2.0.13
v2.0.14
v2.0.15
v2.0.16
v2.0.17
v2.0.18
v2.0.19
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.8
v2.0.9
v2.1.0
v2.1.1
v2.1.10
v2.1.2
v2.1.3
v2.1.4
v2.1.5
v2.1.6
v2.1.7
v2.1.8
v2.1.9