CVE-2026-84370 (GCVE-0-2026-84370)
Vulnerability from cvelistv5 – Published: 2026-09-01 20:47 – Updated: 2026-09-04 02:12
VLAI
EPSS
VEX
Title
SVGO: removeScripts allows executable links through namespace and control-character bypasses
Summary
SVGO, short for SVG Optimizer, is a Node.js library and command-line application for optimizing SVG files. From version 1.0.0 until versions 2.8.4, 3.3.5, and 4.1.0, the opt-in removeScripts plugin, named removeScriptElement in versions 2 and 3, incompletely filters executable links in plugins/removeScripts.js and lib/svgo/tools.js. The plugin does not recognize namespace-prefixed SVG anchor elements such as svg:a with href or namespaced *:href values, and it does not remove ASCII tab, line-feed, or carriage-return characters before checking URL schemes. Browsers remove those characters before parsing a scheme, allowing an executable link to pass the plugin's check. When an application processes attacker-controlled SVG input and serves the result in an active browser context, a victim who activates the surviving link can execute script in the SVG's origin, expose data, modify content, or perform actions as the victim. This issue is fixed in versions 2.8.4, 3.3.5, and 4.1.0.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 02:11 UTC
CWE
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://github.com/svg/svgo/security/advisories/G… | x_refsource_CONFIRM |
| https://github.com/svg/svgo/pull/2268 | x_refsource_MISC |
| https://github.com/svg/svgo/pull/2269 | x_refsource_MISC |
| https://github.com/svg/svgo/pull/2272 | x_refsource_MISC |
| https://github.com/svg/svgo/commit/0557385564a5c6… | x_refsource_MISC |
| https://github.com/svg/svgo/commit/3db3ef33e409a0… | x_refsource_MISC |
| https://github.com/svg/svgo/commit/994a9f00d79dde… | x_refsource_MISC |
| https://github.com/svg/svgo/releases/tag/v2.8.4 | x_refsource_MISC |
| https://github.com/svg/svgo/releases/tag/v3.3.5 | x_refsource_MISC |
| https://github.com/svg/svgo/releases/tag/v4.1.0 | x_refsource_MISC |
Impacted products
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"id": "CVE-2026-84370",
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}
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"attackVector": "NETWORK",
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"baseScore": 8.2,
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},
{
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"description": "CWE-184: Incomplete List of Disallowed Inputs",
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"x_refsource_MISC"
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},
{
"name": "https://github.com/svg/svgo/pull/2272",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/svg/svgo/pull/2272"
},
{
"name": "https://github.com/svg/svgo/commit/0557385564a5c6c11d76cd934a6cff94451e532c",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/svg/svgo/commit/0557385564a5c6c11d76cd934a6cff94451e532c"
},
{
"name": "https://github.com/svg/svgo/commit/3db3ef33e409a0bc0fdaf255e46c908b00e93bc2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/svg/svgo/commit/3db3ef33e409a0bc0fdaf255e46c908b00e93bc2"
},
{
"name": "https://github.com/svg/svgo/commit/994a9f00d79ddec68ce19a1ce9eb8ca08d747e4f",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/svg/svgo/commit/994a9f00d79ddec68ce19a1ce9eb8ca08d747e4f"
},
{
"name": "https://github.com/svg/svgo/releases/tag/v2.8.4",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/svg/svgo/releases/tag/v2.8.4"
},
{
"name": "https://github.com/svg/svgo/releases/tag/v3.3.5",
"tags": [
"x_refsource_MISC"
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"url": "https://github.com/svg/svgo/releases/tag/v3.3.5"
},
{
"name": "https://github.com/svg/svgo/releases/tag/v4.1.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/svg/svgo/releases/tag/v4.1.0"
}
],
"source": {
"advisory": "GHSA-w27v-7q3p-w38r",
"discovery": "UNKNOWN"
},
"title": "SVGO: removeScripts allows executable links through namespace and control-character bypasses"
}
},
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"cveId": "CVE-2026-84370",
"datePublished": "2026-09-01T20:47:08.707Z",
"dateReserved": "2026-09-01T16:27:58.129Z",
"dateUpdated": "2026-09-04T02:12:10.574Z",
"state": "PUBLISHED"
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"date": "2026-09-04",
"epss": "0.00336",
"percentile": "0.26312"
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"suse_vex": {
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"current_release_date": "2026-09-03T00:02:41Z",
"cve": "CVE-2026-84370",
"id": "CVE-2026-84370",
"initial_release_date": "2026-09-03T00:02:41Z",
"product_status:known_affected": "236",
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"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-84370",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-84370.json",
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"vulnrichment": {
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"dataType": "CVE_RECORD",
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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