UBUNTU-CVE-2026-58266 (CVE-2026-58266)
Vulnerability from osv_ubuntu – Published: 2026-07-07 22:16 – Updated: 2026-07-07 22:16 – Source website
VLAI
Details
Anki is a program for creating and reviewing flashcards. Prior to 25.09.4, Anki's webview-based pages communicate with the Rust backend using an internal localhost API, and user scripts included via iframes in the editor can access this API despite protections intended to block reviewer and editor scripts. A malicious imported card package with an embedded iframe can use exposed API methods such as getImageForOcclusion to read arbitrary files accessible to the Anki process and exfiltrate them over the network. This issue is fixed in version 25.09.4.
Severity
6.5 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "anki",
"binary_version": "2.0.32+dfsg-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "anki",
"purl": "pkg:deb/ubuntu/anki@2.0.32+dfsg-1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.32+dfsg-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "anki",
"binary_version": "2.1.0+dfsg~b36-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "anki",
"purl": "pkg:deb/ubuntu/anki@2.1.0+dfsg~b36-1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.0+dfsg~a12-0.1",
"2.1.0+dfsg~b24-1",
"2.1.0+dfsg~b25-1",
"2.1.0+dfsg~b26-1",
"2.1.0+dfsg~b27-1",
"2.1.0+dfsg~b29-1",
"2.1.0+dfsg~b31-1",
"2.1.0+dfsg~b33-1",
"2.1.0+dfsg~b34-1",
"2.1.0+dfsg~b35-1",
"2.1.0+dfsg~b36-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "anki",
"binary_version": "2.1.15+dfsg-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "anki",
"purl": "pkg:deb/ubuntu/anki@2.1.15+dfsg-1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.8+dfsg-1ubuntu1",
"2.1.15+dfsg-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "anki",
"binary_version": "2.1.15+dfsg-3ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "anki",
"purl": "pkg:deb/ubuntu/anki@2.1.15+dfsg-3ubuntu0.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.15+dfsg-3",
"2.1.15+dfsg-3ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "anki",
"binary_version": "2.1.15+dfsg-3ubuntu4.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "anki",
"purl": "pkg:deb/ubuntu/anki@2.1.15+dfsg-3ubuntu4.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.15+dfsg-3ubuntu1",
"2.1.15+dfsg-3ubuntu2",
"2.1.15+dfsg-3ubuntu3",
"2.1.15+dfsg-3ubuntu4",
"2.1.15+dfsg-3ubuntu4.1"
]
}
],
"aliases": [],
"details": "Anki is a program for creating and reviewing flashcards. Prior to 25.09.4, Anki\u0027s webview-based pages communicate with the Rust backend using an internal localhost API, and user scripts included via iframes in the editor can access this API despite protections intended to block reviewer and editor scripts. A malicious imported card package with an embedded iframe can use exposed API methods such as getImageForOcclusion to read arbitrary files accessible to the Anki process and exfiltrate them over the network. This issue is fixed in version 25.09.4.",
"id": "UBUNTU-CVE-2026-58266",
"modified": "2026-07-07T22:16:00Z",
"published": "2026-07-07T22:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-58266"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-58266"
},
{
"type": "REPORT",
"url": "https://github.com/ankitects/anki/security/advisories/GHSA-cw6h-ffmh-x6vh"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-58266"
]
}
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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