A specially crafted HTML fragment can cause Sanitize gem for Ruby to allow non-whitelisted attributes to be used on a whitelisted HTML element
Published Mar 30, 2018
7.5
HIGHCVSS 3.0
EPSS 1.47%
Description
A specially crafted HTML fragment can cause Sanitize gem for Ruby to allow non-whitelisted attributes to be used on a whitelisted HTML element.
Affected products
-
- Version < 4.6.3StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Ryan Grove | Sanitize (ruby Gem) | n/a |
|
- ≤ 4.6.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AV:N/AC:L/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.47% (0.01468) | 72.78th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.47% (0.01468) | 72.57th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.14% (0.00142) | 50.42th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.14% (0.00142) | 49.27th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.19% (0.00192) | 54.93th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.04% (0.01040) | 28.32th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (8)
- https://about.gitlab.com/2018/06/25/security-release-gitlab-11-dot-0-dot-1-released/ x_refsource_CONFIRM
- https://github.com/advisories/GHSA-7f42-p84j-f58p Advisory
- https://github.com/rgrove/sanitize/commit/01629a162e448a83d901456d0ba8b65f3b03d46e x_refsource_CONFIRMPatchThird Party Advisory
- https://github.com/rgrove/sanitize/commit/93feeb38e21864146bb29191792b971dbe1ec62e
- https://github.com/rgrove/sanitize/issues/176 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/sanitize/CVE-2018-3740.yml
- https://nvd.nist.gov/vuln/detail/CVE-2018-3740
- https://www.debian.org/security/2018/dsa-4358 vendor-advisoryx_refsource_DEBIAN
| Link | Providers | Tags |
|---|---|---|
| https://about.gitlab.com/2018/06/25/security-release-gitlab-11-dot-0-dot-1-released/ | x_refsource_CONFIRM | |
| https://github.com/advisories/GHSA-7f42-p84j-f58p | Advisory | |
| https://github.com/rgrove/sanitize/commit/01629a162e448a83d901456d0ba8b65f3b03d46e | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://github.com/rgrove/sanitize/commit/93feeb38e21864146bb29191792b971dbe1ec62e | ||
| https://github.com/rgrove/sanitize/issues/176 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://github.com/rubysec/ruby-advisory-db/blob/master/gems/sanitize/CVE-2018-3740.yml | ||
| https://nvd.nist.gov/vuln/detail/CVE-2018-3740 | ||
| https://www.debian.org/security/2018/dsa-4358 | vendor-advisoryx_refsource_DEBIAN |
Change history (0)
No recorded changes yet.