CVE-2026-44312
- Source
- https://cve.org/CVERecord?id=CVE-2026-44312
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44312.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-44312
- Aliases
- Downstream
- Published
- 2026-05-14T16:15:04.907Z
- Modified
- 2026-07-15T01:49:07.862469212Z
- Severity
-
- 5.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N CVSS Calculator
- Summary
- css_parser allows to MITM included https css urls
- Details
-
cssparser is a Ruby CSS parser. Prior to 2.1.0 and 1.22.0, the CSS Parser gem does not validate HTTPS connections, allowing a Man-in-the-Middle (MITM) attacker to inject or modify CSS content when stylesheets are loaded via HTTPS. The connection is established with OpenSSL::SSL::VERIFYNONE, meaning any HTTPS certificate—even entirely untrusted—will be accepted without validation. This vulnerability is fixed in 2.1.0 and 1.22.0.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-295", "CWE-829" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44312.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44312.json
- https://github.com/premailer/css_parser/security/advisories/GHSA-ff6c-w6qf-7xqc
- https://nvd.nist.gov/vuln/detail/CVE-2026-44312
- https://github.com/premailer/css_parser/issues/185
- https://github.com/premailer/css_parser/commit/35e689c904225add78e0c488cf04bad052666449
- https://github.com/premailer/css_parser/commit/e0c95d5abe91b237becb90ff316531a6547ada18
Affected packages
Git / github.com/premailer/css_parser
Affected ranges
- Type
- GIT
- Repo
- https://github.com/premailer/css_parser
- Events
-
IntroducedIntroduced0 Unknown introduced commit / All previous commits are affectedFixedFixedFixedFixed
- Database specific
{ "source": [ "AFFECTED_FIELD", "REFERENCES" ], "extracted_events": [ { "introduced": "2.0.0" }, { "fixed": "2.1.0" }, { "introduced": "0" }, { "fixed": "1.22.0" } ] }
Affected versions
1.*
1.0.0
1.0.1
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.1.6
1.1.7
1.1.8
1.1.9
1.2.1
1.2.2
1.2.3
1.2.5
1.2.6
v1.*
v1.10.0
v1.11.0
v1.12.0
v1.13.0
v1.14.0
v1.15.0
v1.16.0
v1.17.0
v1.17.1
v1.19.0
v1.19.1
v1.20.0
v1.21.0
v1.21.1
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.3.5
v1.3.6
v1.3.7
v1.4.0
v1.4.1
v1.4.10
v1.4.2
v1.4.3
v1.4.4
v1.4.5
v1.4.6
v1.4.7
v1.4.8
v1.4.9
v1.5.0
v1.5.0.pre
v1.5.0.pre2
v1.6.0
v1.7.0
v1.7.1
v1.8.0
v1.9.0
v2.*
v2.0.0